jenkins: Sync trackupstream job from ci.o.o

Sync latest version of openstack-trackupstream from jenkins to git.
Changes:
 - Remove <hudson.security.AuthorizationMatrixProperty>
 - Remove openstack-sahara and python-saharaclient
 - Added openstack-manila and python-manilaclient
 - Update CombinationFilter
 - Run job sequentially
> I personally like the multi-line approach .. this is the problem with syncing from ci to git. we used to do it the other way around (push git to ci).

+1 for pushing from git to ci. But then I would like to use something like jenkins-job-builder for job configuration.