ml2/rpc: provide a small helper to avoid redundancy
ml2/rpc: provide a small helper to avoid redundancy

Change-Id: I12e700c6ad523ebcf47f9bb049d407a674d4ef47
Signed-off-by: Sahid Orentino Ferdjaoui <f799991784850b8d4b84e1fdbe797720df9aae1a@redhat.com>

mahak/neutron,openstack/neutron,openstack/neutron,noironetworks/neutron,mahak/neutron,noironetworks/neutron,mahak/neutron,openstack/neutron