Also consider podman containers when running facter
Also consider podman containers when running facter

We must avoid running crm_node -n inside containers because
pacemaker might hang. Since podman-generated containers do not
have /.dockerenv we also check for /run/.containerenv which
is the way to check we're inside containers when using podman.

Change-Id: Id0ac62ffcea0fd66251174eebdb9e70113919bf5

openstack/puppet-pacemaker,openstack/puppet-pacemaker,openstack/puppet-pacemaker,openstack/puppet-pacemaker