* stable-3.1:
When writing temporary plugin files, ensure the directory exists
Update git submodules
Update git submodules
Fix gr-label-info test
Set version to 2.16.21-SNAPSHOT
Set version to 2.16.20
Trim parameterized strings evaluated from LdapRealm
Update account full name when it changes in LDAP
Set Api version for plugin jars
Update git submodules
Update git submodules
Update git submodules
Update git submodules
Update git submodules
Update git submodules
e2e-tests: Add {Approve|Submit}Change core scenarios
Hide "No Votes" notice for for labels added and approved by rules
Change-Id: I5c2450f3ead115d143102eeaff990e8daf66f5e8