[chore] Update components' medata.yaml distribution information to match core and contrib (open-telemetry#30832)

**Description:** <Describe what has changed.>
<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
While investigating open-telemetry#30791 I noticed some components are included in
releases but their `metadata.yaml` files don't actually include the
distribution their included in. These updates should mean metadata is
now up to date with what's included in the
[core](https://github.com/open-telemetry/opentelemetry-collector-releases/blob/main/distributions/otelcol/manifest.yaml)
and
[contrib](https://github.com/open-telemetry/opentelemetry-collector-releases/blob/main/distributions/otelcol-contrib/manifest.yaml)
releases.

Author: crobert-1

exporter/kafkaexporter/README.md

@@ -4,11 +4,12 @@
 | Status        |           |
 | ------------- |-----------|
 | Stability     | [beta]: traces, metrics, logs   |
-| Distributions | [contrib], [aws], [observiq], [splunk], [sumo] |
+| Distributions | [core], [contrib], [aws], [observiq], [splunk], [sumo] |
 | Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aexporter%2Fkafka%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aexporter%2Fkafka) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aexporter%2Fkafka%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aexporter%2Fkafka) |
 | [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@pavolloffay](https://www.github.com/pavolloffay), [@MovieStoreGuy](https://www.github.com/MovieStoreGuy) |
 
 [beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
+[core]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol
 [contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
 [aws]: https://github.com/aws-observability/aws-otel-collector
 [observiq]: https://github.com/observIQ/observiq-otel-collector

exporter/kafkaexporter/metadata.yaml

@@ -4,6 +4,6 @@ status:
   class: exporter
   stability:
     beta: [traces, metrics, logs]
-  distributions: [contrib, observiq, splunk, sumo, aws]
+  distributions: [core, contrib, observiq, splunk, sumo, aws]
   codeowners:
     active: [pavolloffay, MovieStoreGuy]

exporter/opencensusexporter/README.md

@@ -4,11 +4,12 @@
 | Status        |           |
 | ------------- |-----------|
 | Stability     | [beta]: traces, metrics   |
-| Distributions | [contrib], [observiq] |
+| Distributions | [core], [contrib], [observiq] |
 | Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aexporter%2Fopencensus%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aexporter%2Fopencensus) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aexporter%2Fopencensus%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aexporter%2Fopencensus) |
 | [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@open-telemetry/collector-approvers](https://github.com/orgs/open-telemetry/teams/collector-approvers) |
 
 [beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
+[core]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol
 [contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
 [observiq]: https://github.com/observIQ/observiq-otel-collector
 <!-- end autogenerated section -->

exporter/opencensusexporter/metadata.yaml

@@ -4,6 +4,6 @@ status:
   class: exporter
   stability:
     beta: [traces, metrics]
-  distributions: [contrib, observiq]
+  distributions: [core, contrib, observiq]
   codeowners:
     active: [open-telemetry/collector-approvers]

receiver/kafkareceiver/README.md

@@ -4,11 +4,12 @@
 | Status        |           |
 | ------------- |-----------|
 | Stability     | [beta]: metrics, logs, traces   |
-| Distributions | [contrib], [aws], [grafana], [observiq], [splunk], [sumo] |
+| Distributions | [core], [contrib], [aws], [grafana], [observiq], [splunk], [sumo] |
 | Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Areceiver%2Fkafka%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Areceiver%2Fkafka) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Areceiver%2Fkafka%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Areceiver%2Fkafka) |
 | [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@pavolloffay](https://www.github.com/pavolloffay), [@MovieStoreGuy](https://www.github.com/MovieStoreGuy) |
 
 [beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
+[core]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol
 [contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
 [aws]: https://github.com/aws-observability/aws-otel-collector
 [grafana]: https://github.com/grafana/agent

receiver/kafkareceiver/metadata.yaml

@@ -5,6 +5,7 @@ status:
   stability:
     beta: [metrics, logs, traces]
   distributions:
+  - core
   - contrib
   - aws
   - grafana

receiver/webhookeventreceiver/README.md

@@ -4,11 +4,12 @@
 | Status        |           |
 | ------------- |-----------|
 | Stability     | [alpha]: logs   |
-| Distributions | [] |
+| Distributions | [contrib] |
 | Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Areceiver%2Fwebhookevent%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Areceiver%2Fwebhookevent) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Areceiver%2Fwebhookevent%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Areceiver%2Fwebhookevent) |
 | [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@atoulme](https://www.github.com/atoulme), [@shalper2](https://www.github.com/shalper2) |
 
 [alpha]: https://github.com/open-telemetry/opentelemetry-collector#alpha
+[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
 <!-- end autogenerated section -->
 
 The Webhook Event Receiver is a push based event collector component meant to act as a generally available receiver for any webhook style data source. It is designed to work alongside other pipeline components

receiver/webhookeventreceiver/metadata.yaml

@@ -4,7 +4,7 @@ status:
   class: receiver
   stability:
     alpha: [logs]
-  distributions:
+  distributions: [contrib]
   codeowners:
     active: ["atoulme", "shalper2"]
     emeritus:

receiver/windowseventlogreceiver/README.md

@@ -4,11 +4,12 @@
 | Status        |           |
 | ------------- |-----------|
 | Stability     | [alpha]: logs   |
-| Distributions | [observiq], [splunk], [sumo] |
+| Distributions | [contrib], [observiq], [splunk], [sumo] |
 | Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Areceiver%2Fwindowseventlog%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Areceiver%2Fwindowseventlog) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Areceiver%2Fwindowseventlog%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Areceiver%2Fwindowseventlog) |
 | [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@djaglowski](https://www.github.com/djaglowski), [@armstrmi](https://www.github.com/armstrmi), [@pjanotti](https://www.github.com/pjanotti) |
 
 [alpha]: https://github.com/open-telemetry/opentelemetry-collector#alpha
+[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
 [observiq]: https://github.com/observIQ/observiq-otel-collector
 [splunk]: https://github.com/signalfx/splunk-otel-collector
 [sumo]: https://github.com/SumoLogic/sumologic-otel-collector

receiver/windowseventlogreceiver/metadata.yaml

@@ -4,6 +4,6 @@ status:
   class: receiver
   stability:
     alpha: [logs]
-  distributions: [splunk, observiq, sumo]
+  distributions: [contrib, splunk, observiq, sumo]
   codeowners:
     active: [djaglowski, armstrmi, pjanotti]