feat: add genesis_gaslimit param configuration (#726)

This PR adds `genesis_gas_limit` parameter within `network_params.yaml`
to make the parameter configurable using Kurtosis.

It seems like
[ethereum-genesis-generator](https://github.com/ethpandaops/ethereum-genesis-generator),
which is being used in this package already has the capability to change
`genesis_gas_limit` by changing `export
GENESIS_GASLIMIT="${GENESIS_GASLIMIT:-30000000}"` within
[defaults.env](https://github.com/ethpandaops/ethereum-genesis-generator/blob/master/defaults/defaults.env#L27).
This feature didn't seem like it was directly transferred to the
`ehtereum-package`.

Tested locally with the `main` branch and changing the
`genesis_gas_limit` value to `50000000`.
![Screenshot from 2024-07-26
11-26-12](https://github.com/user-attachments/assets/c3ad1dd9-edd6-461c-bb81-a79de1593833)

---------
Signed-off-by: Ji Hwan <jkim@polygon.technology>
Co-authored-by: Barnabas Busa <busa.barnabas@gmail.com>

README.md

@@ -464,6 +464,9 @@ network_params:
   # How long you want the network to wait before starting up
   genesis_delay: 20
 
+  # The gas limit of the network set at genesis
+  genesis_gaslimit: 30000000
+
   # Max churn rate for the network introduced by
   # EIP-7514 https://eips.ethereum.org/EIPS/eip-7514
   # Defaults to 8

network_params.yaml

@@ -66,6 +66,7 @@ network_params:
     very lucky have athlete"
   preregistered_validator_count: 0
   genesis_delay: 20
+  genesis_gaslimit: 30000000
   max_per_epoch_activation_churn_limit: 8
   churn_limit_quotient: 65536
   ejection_balance: 16000000000

src/package_io/input_parser.star

@@ -259,6 +259,7 @@ def input_parser(plan, input_args):
             ],
             seconds_per_slot=result["network_params"]["seconds_per_slot"],
             genesis_delay=result["network_params"]["genesis_delay"],
+            genesis_gaslimit=result["network_params"]["genesis_gaslimit"],
             max_per_epoch_activation_churn_limit=result["network_params"][
                 "max_per_epoch_activation_churn_limit"
             ],
@@ -781,6 +782,7 @@ def default_network_params():
         "preregistered_validator_keys_mnemonic": constants.DEFAULT_MNEMONIC,
         "preregistered_validator_count": 0,
         "genesis_delay": 20,
+        "genesis_gaslimit": 30000000,
         "max_per_epoch_activation_churn_limit": 8,
         "churn_limit_quotient": 65536,
         "ejection_balance": 16000000000,
@@ -813,6 +815,7 @@ def default_minimal_network_params():
         "preregistered_validator_keys_mnemonic": constants.DEFAULT_MNEMONIC,
         "preregistered_validator_count": 0,
         "genesis_delay": 20,
+        "genesis_gaslimit": 30000000,
         "max_per_epoch_activation_churn_limit": 4,
         "churn_limit_quotient": 32,
         "ejection_balance": 16000000000,

src/package_io/sanity_check.star

@@ -122,6 +122,7 @@ SUBCATEGORY_PARAMS = {
         "preregistered_validator_keys_mnemonic",
         "preregistered_validator_count",
         "genesis_delay",
+        "genesis_gaslimit",
         "max_per_epoch_activation_churn_limit",
         "churn_limit_quotient",
         "ejection_balance",

src/prelaunch_data_generator/el_cl_genesis/el_cl_genesis_generator.star

@@ -103,6 +103,7 @@ def new_env_file_for_el_cl_genesis_data(
         "PreregisteredValidatorKeysMnemonic": network_params.preregistered_validator_keys_mnemonic,
         "NumValidatorKeysToPreregister": total_num_validator_keys_to_preregister,
         "GenesisDelay": network_params.genesis_delay,
+        "GenesisGasLimit": network_params.genesis_gaslimit,
         "MaxPerEpochActivationChurnLimit": network_params.max_per_epoch_activation_churn_limit,
         "ChurnLimitQuotient": network_params.churn_limit_quotient,
         "EjectionBalance": network_params.ejection_balance,

static_files/genesis-generation-config/el-cl/values.env.tmpl

@@ -21,6 +21,7 @@ export WITHDRAWAL_TYPE="0x00"
 export WITHDRAWAL_ADDRESS=0xf97e180c050e5Ab072211Ad2C213Eb5AEE4DF134
 export GENESIS_TIMESTAMP={{ .UnixTimestamp }}
 export GENESIS_DELAY={{ .GenesisDelay }}
+export GENESIS_GASLIMIT={{ .GenesisGasLimit }}
 export MAX_PER_EPOCH_ACTIVATION_CHURN_LIMIT={{ .MaxPerEpochActivationChurnLimit }}
 export CHURN_LIMIT_QUOTIENT={{ .ChurnLimitQuotient }}
 export EJECTION_BALANCE={{ .EjectionBalance }}