feat: allow 0 genesis delay (#383)

Author: barnabasbusa

examples/dencun.yaml

@@ -25,7 +25,6 @@ participants:
     cl_client_image: ethpandaops/nimbus:unstable-6dee4d5
 network_params:
   deneb_fork_epoch: 1
-launch_additional_services: true
 additional_services:
   - el_forkmon
   - tx_spammer

examples/verkle-gen-nethermind.yaml

@@ -3,20 +3,26 @@ participants:
     el_client_image: ethpandaops/geth:gballet-kaustinen-with-shapella-fc8f4b9
     cl_client_type: lighthouse
     cl_client_image: ethpandaops/lighthouse:verkle-trees-capella-2ffb8a9
-    count: 2
+  - el_client_type: geth
+    el_client_image: ethpandaops/geth:gballet-kaustinen-with-shapella-fc8f4b9
+    cl_client_type: lodestar
+    cl_client_image: ethpandaops/lodestar:g11tech-verge-815364b
   - el_client_type: nethermind
-    el_client_image: nethermindeth/nethermind:kaustinen
+    el_client_image: nethermindeth/nethermind:kaustinen-648c6b8
     cl_client_type: lodestar
     cl_client_image: ethpandaops/lodestar:g11tech-verge-815364b
     validator_count: 0
+    el_client_log_level: "debug"
   - el_client_type: nethermind
-    el_client_image: nethermindeth/nethermind:kaustinen
+    el_client_image: nethermindeth/nethermind:kaustinen-648c6b8
     cl_client_type: lodestar
     cl_client_image: ethpandaops/lodestar:g11tech-verge-815364b
     validator_count: 0
+    el_client_log_level: "debug"
 network_params:
   electra_fork_epoch: 0
-  seconds_per_slot: 3
+  genesis_delay: 0
+  seconds_per_slot: 8
 additional_services:
   - el_forkmon
   - tx_spammer

src/package_io/input_parser.star

@@ -323,9 +323,6 @@ def parse_network_params(input_args):
     if result["network_params"]["seconds_per_slot"] == 0:
         fail("seconds_per_slot is 0 needs to be > 0 ")
 
-    if result["network_params"]["genesis_delay"] == 0:
-        fail("genesis_delay is 0 needs to be > 0 ")
-
     if result["network_params"]["deneb_fork_epoch"] == 0:
         fail("deneb_fork_epoch is 0 needs to be > 0 ")