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/builder.rs

@@ -954,6 +954,7 @@ mod test {
             &generate_deterministic_keypairs(validator_count),
             genesis_time,
             Hash256::from_slice(DEFAULT_ETH1_BLOCK_HASH),
+            None,
             &spec,
         )
         .expect("should create interop genesis state");
@@ -1023,6 +1024,7 @@ mod test {
             &keypairs,
             genesis_time,
             Hash256::from_slice(DEFAULT_ETH1_BLOCK_HASH),
+            None,
             spec,
         )
         .expect("should build state");