Filter for local nodes in check_resource function

Filter for local nodes in check_resource function

While having extra customizations inside a TripleO deployed
Pacemaker environment, say you have instance HA with
pacemaker_remoted or you need to configure an external arbitrator
for something, then the status of the resources for remote nodes
is "Stopped".
This leads to failures while, for example, scaling up.
This fixes the way status is checked, filtering just local nodes.

Co-Authored-By: Giulio Fidente <gfidente@redhat.com>
Change-Id: I8dc25f5d7031c265858afd5a266fda5315ae37a0