Move centos tests to voting

These are now passing so should be voting again to prevent regressions.

Change-Id: Ic696746772ca1b707ea12085917bf72f96e8cac3

zuul.d/project.yaml

@@ -17,11 +17,6 @@
       - openstack-ansible-role-jobs
     check:
       jobs:
-        # TODO(evrardjp): Revert this to voting as soon
-        # as https://bugs.launchpad.net/openstack-ansible/+bug/1729263
-        # is fixed.
-        - openstack-ansible-functional-centos-7:
-            voting: false
         - openstack-ansible-upgrade-ubuntu-xenial
         # TODO(odyssey4me): Revert this once the multi-region
         # tests are fixed.
@@ -37,11 +32,6 @@
         - openstack-ansible-functional-distro_install-opensuse-423
     gate:
       jobs:
-        # TODO(evrardjp): Reintroduce the centos gating
-        # job when https://bugs.launchpad.net/openstack-ansible/+bug/1729263
-        # is fixed
-        - openstack-ansible-functional-centos-7:
-            voting: false
         - openstack-ansible-upgrade-ubuntu-xenial
         # TODO(odyssey4me): Revert this once the multi-region
         # tests are fixed.