* stable-2.16:
Add autocomplete off to LDAP login form
Update git submodules
Block the removal of the Realm primary external ids
e2e-tests: Replace FileBasedFeederBuilder with FeederBuilder declaration
e2e-tests: Add FlushProjectsCache related scenarios
Change-Id: Idb4592ba5b7ba398f59ba16d529676e00c97dd1b