Temporary make CentOS non voting

Until the bug #1729263 is resolved, we should move back to
non-voting centos, to avoid an useless series of rechecks.

Change-Id: I930a0458c10625e2f795f4fba76675f5b93a6f7d

zuul.d/project.yaml

@@ -18,7 +18,10 @@
     check:
       jobs:
         - openstack-ansible-linters
-        - openstack-ansible-functional-centos-7
+        # TODO(evrardjp): Revert this to voting as soon
+        # as https://bugs.launchpad.net/openstack-ansible/+bug/1729263
+        # is fixed.
+        - openstack-ansible-functional-centos-7-nv
         - openstack-ansible-functional-opensuse-423
         - openstack-ansible-functional-ubuntu-xenial
         - openstack-ansible-upgrade-ubuntu-xenial
@@ -28,7 +31,9 @@
     gate:
       jobs:
         - openstack-ansible-linters
-        - openstack-ansible-functional-centos-7
+        # TODO(evrardjp): Reintroduce the centos gating
+        # job when https://bugs.launchpad.net/openstack-ansible/+bug/1729263
+        # is fixed
         - openstack-ansible-functional-opensuse-423
         - openstack-ansible-functional-ubuntu-xenial
         - openstack-ansible-upgrade-ubuntu-xenial