* stable-2.15:
Consume JGit artifacts from Maven Central
Consume JGit artifacts from Maven Central
gr-related-changes: Don't show "Same topic" for only one change
RelatedChanges: Don't show "Same Topic" for only one change
ChangeEditApi: Allow to set options on change edit detail request
Add Javadoc to clarify behavior of {Accounts|Changes|Groups}#withOptions
OnlineNoteDbMigrationIT: improve readability of some tests
Update git submodules
Add release notes for Gerrit v2.10.8
Add release notes for Gerrit v2.9.5
Set version to 2.13.12
Set version to 2.12.9
Set version to 2.11.12
Set version to 2.10.8
Set version to 2.9.5
Change-Id: Id02a8afc6e4e8d42b759ed2ea28a0926411ff2e8