Removes redundant code in quantum.api.api_common
Removes redundant code in quantum.api.api_common

Fixes bug #1102313

Change-Id: Ie321c48ae6d38f013e1ef8471df4d86b63b28931

gkotton/neutron,vveerava/Openstack,rdo-management/neutron,armando-migliaccio/neutron,oeeagle/quantum,waltBB/neutron_read,yuewko/neutron,virtualopensystems/neutron,silenci/neutron,infobloxopen/neutron,SmartInfrastructures/neutron,Metaswitch/calico-neutron,aristanetworks/neutron,jacknjzhou/neutron,barnsnake351/neutron,redhat-openstack/neutron,mmnelemane/neutron,dhanunjaya/neutron,dhanunjaya/neutron,projectcalico/calico-neutron,JioCloud/neutron,antonioUnina/neutron,openstack/neutron,silenci/neutron,CiscoSystems/vespa,yamahata/tacker,CiscoSystems/quantum,Juniper/contrail-dev-neutron,Juniper/contrail-dev-neutron,bigswitch/neutron,Comcast/neutron,ykaneko/quantum,cernops/neutron,CiscoSystems/vespa,wolverineav/neutron,ntt-sic/neutron,huntxu/neutron,pnavarro/neutron,vijayendrabvs/hap,jerryz1982/neutron,ykaneko/neutron,vveerava/Openstack,alexandrucoman/vbox-neutron-agent,swdream/neutron,sasukeh/neutron,igor-toga/local-snat,ykaneko/neutron,suneeth51/neutron,jacknjzhou/neutron,projectcalico/calico-neutron,waltBB/neutron_read,yamt/neutron,vbannai/neutron,MaximNevrov/neutron,yamt/neutron,gopal1cloud/neutron,magic0704/neutron,beagles/neutron_hacking,virtualopensystems/neutron,yamahata/neutron,yuewko/neutron,liqin75/vse-vpnaas-plugin,rossella/neutron,leeseuljeong/leeseulstack_neutron,CiscoSystems/quantum,skyddv/neutron,Juniper/neutron,kaiweifan/vse-lbaas-plugin-poc,paninetworks/neutron,Juniper/neutron,netscaler/neutron,JioCloud/neutron,pnavarro/neutron,SamYaple/neutron,blueboxgroup/neutron,NeCTAR-RC/neutron,NeCTAR-RC/neutron,liqin75/vse-vpnaas-plugin,sasukeh/neutron,sajuptpm/neutron-ipam,kaiweifan/vse-lbaas-plugin-poc,yanheven/neutron,mandeepdhami/neutron,SmartInfrastructures/neutron,infobloxopen/neutron,zhhf/charging,Comcast/neutron,bgxavier/neutron,kaiweifan/neutron,gkotton/neutron,tpaszkowski/quantum,neoareslinux/neutron,netscaler/neutron,bgxavier/neutron,tpaszkowski/quantum,adelina-t/neutron,dims/neutron,mahak/neutron,jumpojoy/neutron,ykaneko/quantum,watonyweng/neutron,cisco-openstack/neutron,glove747/liberty-neutron,Metaswitch/calico-neutron,yamahata/neutron,mandeepdhami/neutron,bigswitch/neutron,asgard-lab/neutron,chitr/neutron,cloudbase/neutron,klmitch/neutron,kaiweifan/neutron,rossella/neutron,javaos74/neutron,leeseuljeong/leeseulstack_neutron,CiscoSystems/neutron,magic0704/neutron,cloudbase/neutron-virtualbox,rickerc/neutron_audit,leeseulstack/openstack,virtualopensystems/neutron,cloudbase/neutron,CiscoSystems/neutron,cloudbase/neutron-virtualbox,tpaszkowski/quantum,watonyweng/neutron,ntt-sic/neutron,Brocade-OpenSource/OpenStack-DNRM-Neutron,cisco-openstack/neutron,CiscoSystems/vespa,beagles/neutron_hacking,yamt/neutron,aristanetworks/neutron,openstack/neutron,SamYaple/neutron,beagles/neutron_hacking,kaiweifan/neutron,vijayendrabvs/ssl-neutron,takeshineshiro/neutron,citrix-openstack-build/neutron,oeeagle/quantum,eonpatapon/neutron,eayunstack/neutron,shahbazn/neutron,yamahata/neutron,gopal1cloud/neutron,paninetworks/neutron,vivekanand1101/neutron,chitr/neutron,rickerc/neutron_audit,swdream/neutron,liqin75/vse-vpnaas-plugin,apporc/neutron,rdo-management/neutron,sebrandon1/neutron,neoareslinux/neutron,vijayendrabvs/hap,cernops/neutron,leeseuljeong/leeseulstack_neutron,Stavitsky/neutron,blueboxgroup/neutron,vivekanand1101/neutron,wolverineav/neutron,klmitch/neutron,eonpatapon/neutron,sajuptpm/neutron-ipam,openstack/neutron,yamahata/tacker,zhhf/charging,miyakz1192/neutron,apporc/neutron,CiscoSystems/quantum,skyddv/neutron,armando-migliaccio/neutron,mmnelemane/neutron,jumpojoy/neutron,eayunstack/neutron,antonioUnina/neutron,mattt416/neutron,shahbazn/neutron,vveerava/Openstack,kaiweifan/vse-lbaas-plugin-poc,armando-migliaccio/neutron,mahak/neutron,sajuptpm/neutron-ipam,vijayendrabvs/ssl-neutron,Brocade-OpenSource/OpenStack-DNRM-Neutron,igor-toga/local-snat,rossella/neutron,wenhuizhang/neutron,mattt416/neutron,miyakz1192/neutron,JianyuWang/neutron,noironetworks/neutron,vbannai/neutron,blueboxgroup/neutron,leeseulstack/openstack,jerryz1982/neutron,noironetworks/neutron,ykaneko/quantum,yamahata/tacker,leeseulstack/openstack,wenhuizhang/neutron,JianyuWang/neutron,yanheven/neutron,barnsnake351/neutron,citrix-openstack-build/neutron,CiscoSystems/neutron,ykaneko/quantum,vijayendrabvs/hap,ykaneko/neutron,huntxu/neutron,rossella/neutron,javaos74/neutron,dims/neutron,vbannai/neutron,citrix-openstack-build/neutron,Juniper/neutron,MaximNevrov/neutron,takeshineshiro/neutron,ntt-sic/neutron,Juniper/contrail-dev-neutron,yamt/neutron,gkotton/neutron,Stavitsky/neutron,redhat-openstack/neutron,mahak/neutron,vijayendrabvs/ssl-neutron,sebrandon1/neutron,kaiweifan/vse-lbaas-plugin-poc,asgard-lab/neutron,zhhf/charging,Comcast/neutron,rickerc/neutron_audit,adelina-t/neutron,armando-migliaccio/neutron,netscaler/neutron,glove747/liberty-neutron,Brocade-OpenSource/OpenStack-DNRM-Neutron,liqin75/vse-vpnaas-plugin,suneeth51/neutron,tpaszkowski/quantum,alexandrucoman/vbox-neutron-agent