Switch gate-infra-puppet-apply-centos-7 voting
Switch gate-infra-puppet-apply-centos-7 voting

We'll also leave the devstack-centos7 node until we are ready to stop
building devstack-centos7 nodes.

Change-Id: Id4095a266beedc06764d1578c76df43c6ea6b22c
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

dongwenjuan/project-config,openstack-infra/project-config,Tesora/tesora-project-config,openstack-infra/project-config,dongwenjuan/project-config,Tesora/tesora-project-config