Revert "Revert "Make CentOS 9 integration jobs voting""
Revert "Revert "Make CentOS 9 integration jobs voting""

This reverts commit 7e2afcda8f498a34519e866f091deacfa5da07f5.

Reason for revert:
The broken jobs have been fixed.

Related-Bug: #1962506
Related-Bug: #1962507
Change-Id: Ie8091933acbab967d2f386b4cab52f3716b49c1b

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration