Make Rally jobs for Manila non-votable
Make Rally jobs for Manila non-votable

Recently, Rally jobs for Manila 'gate-rally-dsvm-manila-multibackend-no-ss' and
'gate-rally-dsvm-manila-multibackend' were added to check queue to run on each
change. Make these jobs as non-votable as they are used to indicate that Rally
code for Manila works, but it is not desired to block Rally changes because of
possible temporary breakages of Manila project.

Change-Id: I7f68c6bf56d11e113262c880be368a532624b72d

noorul/os-project-config,noorul/os-project-config,anbangr/osci-project-config,coolsvap/project-config,openstack-infra/project-config,openstack-infra/project-config,dongwenjuan/project-config,coolsvap/project-config,dongwenjuan/project-config,anbangr/osci-project-config,Tesora/tesora-project-config,Tesora/tesora-project-config