[receiver/influxdb] Use component.UseLocalHostAsDefaultHost feature gate (open-telemetry#30912)

**Description:** Fixes open-telemetry#30911

Author: mx-psi

.chloggen/mx-psi_internal-localhostgate.yaml

@@ -24,6 +24,7 @@ subtext: |
     - processor/remotetap
     - receiver/splunk_hec
     - receiver/awsxray
+    - receiver/influxdb
 
 # If your change doesn't affect end users or the exported elements of any package,
 # you should instead start your pull request title with [chore] or use the "Skip Changelog" label.

receiver/influxdbreceiver/README.md

@@ -29,7 +29,8 @@ Write responses:
 
 The following configuration options are supported:
 
-* `endpoint` (default = 0.0.0.0:8086) HTTP service endpoint for the line protocol receiver
+* `endpoint` (default = 0.0.0.0:8086) HTTP service endpoint for the line protocol receiver.  The 
+  `component.UseLocalHostAsDefaultHost` feature gate changes this to localhost:8086. This will become the default in a future release.
 
 The full list of settings exposed for this receiver are documented in [config.go](config.go).
 

receiver/influxdbreceiver/factory.go

@@ -11,9 +11,12 @@ import (
 	"go.opentelemetry.io/collector/consumer"
 	"go.opentelemetry.io/collector/receiver"
 
+	"github.com/open-telemetry/opentelemetry-collector-contrib/internal/common/localhostgate"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/influxdbreceiver/internal/metadata"
 )
 
+const defaultPort = 8086
+
 func NewFactory() receiver.Factory {
 	return receiver.NewFactory(
 		metadata.Type,
@@ -25,7 +28,7 @@ func NewFactory() receiver.Factory {
 func createDefaultConfig() component.Config {
 	return &Config{
 		HTTPServerConfig: confighttp.HTTPServerConfig{
-			Endpoint: "0.0.0.0:8086",
+			Endpoint: localhostgate.EndpointForPort(defaultPort),
 		},
 	}
 }