Update powervc neutron agent to match new change.
Update powervc neutron agent to match new change.

neutron.common.config has changed setup_logging method signature.
powervc neutron agent code needs to be updated

Change-Id: Iab045cb3a42d8528c093006acf7e5cc0d3a2618d
Closes-Bug: #1368009

openstack/powervc-driver,openstack/powervc-driver,stackforge/powervc-driver,stackforge/powervc-driver