op-chain-ops: add geth test key to dev L2 genesis alloc (#3642)

Adds the test key used in geth's unit tests to the genesis
alloc. This makes testing more seamless when using the
op-chain-ops tooling
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

op-chain-ops/genesis/helpers.go

@@ -57,6 +57,8 @@ var DevAccounts = []common.Address{
 	common.HexToAddress("0xdF3e18d64BC6A983f673Ab319CCaE4f1a57C7097"),
 	common.HexToAddress("0xde3829a23df1479438622a08a116e8eb3f620bb5"),
 	common.HexToAddress("0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"),
+	// Test account used by geth tests
+	common.HexToAddress("0x71562b71999873DB5b286dF957af199Ec94617F7"),
 }
 
 // The devBalance is the amount of wei that a dev account is funded with.

op-chain-ops/genesis/layer_two_test.go

@@ -77,7 +77,7 @@ func TestBuildL2DeveloperGenesis(t *testing.T) {
 		require.Equal(t, adminSlot, proxyAdmin.Address.Hash())
 		require.Equal(t, account.Code, depB)
 	}
-	require.Equal(t, 2338, len(gen.Alloc))
+	require.Equal(t, 2339, len(gen.Alloc))
 
 	if writeFile {
 		file, _ := json.MarshalIndent(gen, "", " ")