don't vote on icehouse jobs we don't on master

in doing the icehouse jobs on tempest we ended up voting on a
couple of jobs in icehouse that we don't on master (2 neutron
jobs in particular). We shouldn't do that.

Change-Id: I3d518345184542686246be08c41c5358fdd9c4fd
Merge "don't vote on icehouse jobs we don't on master"