Stop using RPC namespace to unbreak rolling upgrades
Stop using RPC namespace to unbreak rolling upgrades

This is a temporary patch until we get an Oslo messaging
release that supports Targets with multiple namespaces:
https://review.openstack.org/#/c/163673/

Change-Id: I96e01c00991a9d8602ebc89dbad5206b805c67eb
Related-Bug: #1430984

magic0704/neutron,shahbazn/neutron,JioCloud/neutron,infobloxopen/neutron,JianyuWang/neutron,antonioUnina/neutron,mahak/neutron,sasukeh/neutron,sebrandon1/neutron,openstack/neutron,miyakz1192/neutron,wenhuizhang/neutron,glove747/liberty-neutron,sebrandon1/neutron,silenci/neutron,yanheven/neutron,vivekanand1101/neutron,klmitch/neutron,takeshineshiro/neutron,cloudbase/neutron,mattt416/neutron,Stavitsky/neutron,SmartInfrastructures/neutron,openstack/neutron,miyakz1192/neutron,glove747/liberty-neutron,antonioUnina/neutron,yuewko/neutron,skyddv/neutron,SmartInfrastructures/neutron,jacknjzhou/neutron,JioCloud/neutron,pnavarro/neutron,eonpatapon/neutron,bgxavier/neutron,noironetworks/neutron,wenhuizhang/neutron,cisco-openstack/neutron,mahak/neutron,dhanunjaya/neutron,alexandrucoman/vbox-neutron-agent,igor-toga/local-snat,barnsnake351/neutron,Stavitsky/neutron,cisco-openstack/neutron,takeshineshiro/neutron,igor-toga/local-snat,asgard-lab/neutron,javaos74/neutron,yuewko/neutron,openstack/neutron,swdream/neutron,watonyweng/neutron,asgard-lab/neutron,watonyweng/neutron,shahbazn/neutron,eayunstack/neutron,eayunstack/neutron,aristanetworks/neutron,NeCTAR-RC/neutron,eonpatapon/neutron,magic0704/neutron,mattt416/neutron,mahak/neutron,apporc/neutron,MaximNevrov/neutron,MaximNevrov/neutron,apporc/neutron,neoareslinux/neutron,swdream/neutron,noironetworks/neutron,waltBB/neutron_read,barnsnake351/neutron,chitr/neutron,adelina-t/neutron,jerryz1982/neutron,cloudbase/neutron,SamYaple/neutron,jumpojoy/neutron,huntxu/neutron,jacknjzhou/neutron,aristanetworks/neutron,sasukeh/neutron,paninetworks/neutron,suneeth51/neutron,jerryz1982/neutron,suneeth51/neutron,klmitch/neutron,mmnelemane/neutron,mandeepdhami/neutron,bigswitch/neutron,JianyuWang/neutron,wolverineav/neutron,adelina-t/neutron,alexandrucoman/vbox-neutron-agent,chitr/neutron,mmnelemane/neutron,huntxu/neutron,javaos74/neutron,wolverineav/neutron,silenci/neutron,dhanunjaya/neutron,dims/neutron,vivekanand1101/neutron,bgxavier/neutron,waltBB/neutron_read,NeCTAR-RC/neutron,yanheven/neutron,mandeepdhami/neutron,dims/neutron,paninetworks/neutron,pnavarro/neutron,neoareslinux/neutron,SamYaple/neutron,infobloxopen/neutron,jumpojoy/neutron,skyddv/neutron,bigswitch/neutron