* stable-2.16:
ListGroups: Accept --ownedby as an alias of --owned-by
Fix documentation of owned-by option in groups REST API
Update git submodules
ListTestPlugin: Add missing license header
Update git submodules
gerrit-config.txt: cache-automerge is for "merge" commmits
Change-Id: I18a08c9850400ce92ce16677b5441fe4c3d82a8b