PMM-7 Revert "PMM-7 disable RHEL-9 (#1624)" (#1627)
PMM-7 Revert "PMM-7 disable RHEL-9 (#1624)" (#1627)

This reverts commit 33c6c684f8a30f503322091d4c9547fa6b8e36c0.
Percona-Lab/jenkins-pipelines,Percona-Lab/jenkins-pipelines,Percona-Lab/jenkins-pipelines,Percona-Lab/jenkins-pipelines