Update --remote-group-id metavar to REMOTE_GROUP
Update --remote-group-id metavar to REMOTE_GROUP

The metavar value for --remote-group-id was left out in the patch
that renamed source_(group_id|ip_prefix) to remote. This patch
renames this instance of SOURCE to REMOTE.

Change-Id: I99d538e1cdc0b29e62b499c9c8ba8b3a31d77f7a

JioCloud/python-neutronclient,huntxu/python-neutronclient,varunarya10/python-neutronclient,huntxu/python-neutronclient,NeCTAR-RC/python-neutronclient,CiscoSystems/python-quantumclient,CiscoSystems/python-neutronclient,openstack/python-neutronclient,eayunstack/python-neutronclient,varunarya10/python-neutronclient,roaet/python-neutronclient,noironetworks/python-neutronclient,vijayendrabvs/ssl-python-neutronclient,openstack/python-neutronclient,Stavitsky/python-neutronclient,mangelajo/python-neutronclient,cryptickp/python-neutronclient,sajuptpm/python-neutronclient-ipam,johnpbatty/python-neutronclient,CiscoSystems/python-neutronclient,noironetworks/python-neutronclient,yamahata/python-tackerclient,cernops/python-neutronclient,mangelajo/python-neutronclient,cernops/python-neutronclient,CiscoSystems/python-quantumclient,ntt-sic/python-neutronclient,asadoughi/python-neutronclient,roaet/python-neutronclient,eayunstack/python-neutronclient,venusource/python-neutronclient,rackerlabs/rackspace-python-neutronclient,johnpbatty/python-neutronclient,rackerlabs/rackspace-python-neutronclient,sajuptpm/python-neutronclient-ipam,vichoward/python-neutronclient,ntt-sic/python-neutronclient,venusource/python-neutronclient,NeCTAR-RC/python-neutronclient,Juniper/python-neutronclient,citrix-openstack-build/python-neutronclient,asadoughi/python-neutronclient,JioCloud/python-neutronclient,vijayendrabvs/ssl-python-neutronclient,vichoward/python-neutronclient,cryptickp/python-neutronclient,Juniper/python-neutronclient,Stavitsky/python-neutronclient,yamahata/python-tackerclient,citrix-openstack-build/python-neutronclient