A previous patch decoupled the RPC drivers from the nova.flags, breaking instance audit usage in the process.

This configures the instance audit usage to configure the RPC drivers properly with FLAGS so that the job can run.

Change-Id: Ia189d18d7b25a839de67439ccd363103c5af2f8f

bin/instance-usage-audit

@@ -55,6 +55,7 @@ from nova import db
 from nova import exception
 from nova import flags
 from nova import log as logging
+from nova import rpc
 from nova import utils
 import nova.compute.utils
 
@@ -62,6 +63,7 @@ import nova.compute.utils
 FLAGS = flags.FLAGS
 
 if __name__ == '__main__':
+    rpc.register_opts(FLAGS)
     admin_context = context.get_admin_context()
     utils.default_flagfile()
     flags.FLAGS(sys.argv)