this was added in https://github.com/ceph/ceph/pull/39820 to
avoid repeating the override in rgw subsuites, but teuthology
was picking up suites/rgw/ignore-pg-availability.yaml as a job
of its own, and led to 'list index out of range' failures
Fixes: https://tracker.ceph.com/issues/50147
Signed-off-by: Casey Bodley <cbodley@redhat.com>