* stable-3.1: Submit: Use updated change for response Remove Content-Type header from 'Submit Revision' example Update git submodules Fix `parent` in `gr-change-metadata` when there is no revision Change-Id: If47486e4c6aab1072a690c9ae0522f40116e4857
* stable-3.1: Submit: Use updated change for response Remove Content-Type header from 'Submit Revision' example Update git submodules Fix `parent` in `gr-change-metadata` when there is no revision Change-Id: If47486e4c6aab1072a690c9ae0522f40116e4857