Unify metrics_qdr name to underscore
Unify metrics_qdr name to underscore

Some parameter values of the MetricsQdr service used "metrics-qdr"
and some "metrics-qdr". This patch unifies to the one with underscore.

Change-Id: I9767953383a82f8baa50289e88ba279798bbfe92

openstack/tripleo-heat-templates,openstack/tripleo-heat-templates