Fix Optimism Config in L2 Genesis builder (#3075)

* Fix Optimism Config in L2 Genesis builder

This places the Optimism chain config in the correct place as
well as deleting the spurious Clique config in the L2 genesis.

* packages/core-utils: bedrock config type fix

* packages/contracts-bedrock: update genesis l2 task import

* packages/core-utils: bedrock - remove old todo comment
Co-authored-by: Joshua Gutow <jgutow@optimism.io>
Co-authored-by: protolambda <proto@protolambda.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

packages/contracts-bedrock/tasks/genesis-l2.ts

@@ -290,9 +290,9 @@ task('genesis-l2', 'create a genesis config')
         londonBlock: 0,
         mergeNetsplitBlock: 0,
         terminalTotalDifficulty: 0,
-        clique: {
-          period: 0,
-          epoch: 30000,
+        optimism: {
+          baseFeeRecipient: deployConfig.optimismBaseFeeRecipient,
+          l1FeeRecipient: deployConfig.optimismL1FeeRecipient,
         },
       },
       nonce: '0x1234',
@@ -300,11 +300,6 @@ task('genesis-l2', 'create a genesis config')
       timestamp: ethers.BigNumber.from(l1StartingBlock.timestamp).toHexString(),
       gasLimit: deployConfig.genesisBlockGasLimit,
       extraData: deployConfig.genesisBlockExtradata,
-      optimism: {
-        enabled: true,
-        baseFeeRecipient: deployConfig.optimismBaseFeeRecipient,
-        l1FeeRecipient: deployConfig.optimismL1FeeRecipient,
-      },
       alloc,
     }
 

packages/core-utils/src/external/geth/geth-types.ts

@@ -66,15 +66,16 @@ export interface Genesis {
 /**
  * Represents the chain config for an Optimism chain
  */
-export interface OptimismChainConfig {
-  enabled: boolean
+export interface OptimismChainConfig extends ChainConfig {
+  optimism: {
     baseFeeRecipient: string
     l1FeeRecipient: string
+  }
 }
 
 /**
  * Represents the Genesis file format for an Optimism chain
  */
 export interface OptimismGenesis extends Genesis {
-  optimism: OptimismChainConfig
+  config: OptimismChainConfig
 }