Manual addition of old OffsetCommitRequest field (#2743)

Author: dpkp

kafka/protocol/new/schemas/resources/OffsetCommitRequest.json

@@ -62,6 +62,8 @@
           "about": "The message offset to be committed." },
         { "name": "CommittedLeaderEpoch", "type": "int32", "versions": "6+", "default": "-1", "ignorable": true,
           "about": "The leader epoch of this partition." },
+        { "name": "CommitTimestamp", "type": "int64", "versions": "1", "default": "-1",
+          "about": "The timestamp of the commit." },
         { "name": "CommittedMetadata", "type": "string", "versions": "0+", "nullableVersions": "0+",
           "about": "Any associated metadata the client wants to keep." }
       ]}

test/protocol/new/consumer/test_new_group.py

@@ -294,6 +294,7 @@ def test_offset_commit_request_roundtrip(version):
                     partition_index=0,
                     committed_offset=100,
                     committed_leader_epoch=1 if version >= 6 else -1,
+                    commit_timestamp=1 if version == 1 else -1,
                     committed_metadata="meta"
                 )
             ]