v1.1.1 spec updates (#2684)

* update initializing from eth1 for merge genesis

* read execution payload header from file lcli

* add `create-payload-header` command to `lcli`

* fix base fee parsing

* Apply suggestions from code review

* default `execution_payload_header` bool to false when deserializing `meta.yml` in EF tests

Co-authored-by: Paul Hauner <paul@paulhauner.com>

beacon_node/beacon_chain/src/test_utils.rs

@@ -182,6 +182,7 @@ impl<E: EthSpec> Builder<EphemeralHarnessType<E>> {
                 &validator_keypairs,
                 HARNESS_GENESIS_TIME,
                 Hash256::from_slice(DEFAULT_ETH1_BLOCK_HASH),
+                None,
                 builder.get_spec(),
             )
             .expect("should generate interop state");
@@ -228,6 +229,7 @@ impl<E: EthSpec> Builder<DiskHarnessType<E>> {
                 &validator_keypairs,
                 HARNESS_GENESIS_TIME,
                 Hash256::from_slice(DEFAULT_ETH1_BLOCK_HASH),
+                None,
                 builder.get_spec(),
             )
             .expect("should generate interop state");