Fix service-list filter

Fix service-list filter

Currently cinder service list --host=<hostname> will not show any
results for the volume services. This is because the volume-services
append an internal pool name to the hostname and as a result there
won't be a match for the specific filter. This patch fixes the
incorrect work of service-list with '--host' argument. Also it filters
data on the DB side to improve performance.

APIImpact
Closes-Bug: 1530144
Change-Id: I21775106693176ca128dbfd9db0d43cfc58de00a
Depends-On: I4044ab15078ecf54447e1c6e67c27fc8d7c9d6f7