Make sahara-grenade job voting on the "gate" queue too
Make sahara-grenade job voting on the "gate" queue too

It should have been done in the previous commit, will be squashed
with the main import change when backporting to the older branches.

Change-Id: Icda0eb2f0b001f4468ba86af65b8c5c12fbaebab

openstack/sahara,openstack/sahara