Remove pcs/pacemaker package installation from upgrade tasks

We currently forcefully install pacemaker + pcs in a number of upgrade
tasks.  This is suboptimal because on certain nodes pcs/pacemaker repos
are not enabled.  Let's let puppet pull in those packages normally.

Tested this during a queen -> train FFU successfully on a composable
roles environment.

Closes-Bug: #1911684

Change-Id: I97b42e618bcd31e408374157eb10d315ac62f306

deployment/tripleo-packages/tripleo-packages-baremetal-puppet.yaml

@@ -248,8 +248,6 @@ outputs:
                   - net-snmp
                   - openstack-selinux
                   - os-net-config
-                  - pacemaker
-                  - pcs
                   - puppet-tripleo
                   - python3-heat-agent*
                   - rsync