Downgrade pacemaker, resource-agents - exact ver
Downgrade pacemaker, resource-agents - exact ver

https://review.opendev.org/c/openstack/tripleo-common/+/846287
downgrades pacemaker and resource-agents but does
not specify the version. So the problem resurfaced when
these rpms upgraded yet again.

This patch specifies the downgrade version.

Change-Id: If221c0c4cfe4b7a08568916400f4b50a72ab9e21
Related-Bug: #1978997

openstack/tripleo-common,openstack/tripleo-common