bug 903580: remove invalid extensions path from quantum.conf
bug 903580: remove invalid extensions path from quantum.conf

Avoids error message at boot.

Specifying a path here is actually not needed at all.

Change-Id: Id16609bc557a94e1e66191bee589dfd543eda6e6

ykaneko/quantum,yanheven/neutron,eonpatapon/neutron,projectcalico/calico-neutron,alexandrucoman/vbox-neutron-agent,klmitch/neutron,adelina-t/neutron,Metaswitch/calico-neutron,tpaszkowski/quantum,openstack/neutron,aristanetworks/arista-ovs-quantum,savi-dev/quantum,sasukeh/neutron,liqin75/vse-vpnaas-plugin,glove747/liberty-neutron,vijayendrabvs/hap,javaos74/neutron,tpaszkowski/quantum,yamt/neutron,aristanetworks/neutron,savi-dev/quantum,adelina-t/neutron,shahbazn/neutron,JianyuWang/neutron,rickerc/neutron_audit,cisco-openstack/neutron,xchenum/quantum-bug,kaiweifan/vse-lbaas-plugin-poc,vbannai/neutron,ykaneko/neutron,leeseulstack/openstack,yamt/neutron,ykaneko/quantum,zhhf/charging,CiscoSystems/QL3Proto,mattt416/neutron,netscaler/neutron,leeseuljeong/leeseulstack_neutron,JioCloud/neutron,NeCTAR-RC/neutron,MaximNevrov/neutron,cloudbase/neutron,ykaneko/neutron,liqin75/vse-vpnaas-plugin,bgxavier/neutron,vveerava/Openstack,vveerava/Openstack,yamahata/neutron,sajuptpm/neutron-ipam,armando-migliaccio/neutron,mahak/neutron,beagles/neutron_hacking,beagles/neutron_hacking,psiwczak/quantum,savi-dev/quantum,infobloxopen/neutron,oeeagle/quantum,xchenum/quantum-bug,xchenum/quantum,dhanunjaya/neutron,FreescaleSemiconductor/quantum,kaiweifan/neutron,kaiweifan/vse-lbaas-plugin-poc,CiscoSystems/quantum,CiscoSystems/QL3Proto,mmnelemane/neutron,Juniper/neutron,Comcast/neutron,aristanetworks/neutron,CiscoSystems/vespa,mahak/neutron,Brocade-OpenSource/OpenStack-DNRM-Neutron,silenci/neutron,swdream/neutron,ntt-sic/neutron,projectcalico/calico-neutron,yamahata/tacker,yamahata/neutron,xchenum/quantum,sajuptpm/neutron-ipam,asgard-lab/neutron,takeshineshiro/neutron,liqin75/vse-vpnaas-plugin,psiwczak/quantum,ykaneko/quantum,kaiweifan/vse-lbaas-plugin-poc,armando-migliaccio/neutron,ntt-sic/neutron,redhat-openstack/neutron,mattt416/neutron,virtualopensystems/neutron,vijayendrabvs/hap,FreescaleSemiconductor/quantum,Brocade-OpenSource/OpenStack-DNRM-Neutron,bgxavier/neutron,JioCloud/neutron,wenhuizhang/neutron,rossella/neutron,suneeth51/neutron,gopal1cloud/neutron,sileht/deb-openstack-quantum,pnavarro/neutron,aristanetworks/arista-ovs-quantum,rickerc/neutron_audit,chitr/neutron,yamt/neutron,virtualopensystems/neutron,virtualopensystems/neutron,apporc/neutron,ntt-sic/neutron,barnsnake351/neutron,gkotton/neutron,mmnelemane/neutron,dhanunjaya/neutron,cisco-openstack/neutron,FreescaleSemiconductor/quantum,huntxu/neutron,psiwczak/quantum,eayunstack/neutron,noironetworks/neutron,asgard-lab/neutron,javaos74/neutron,sebrandon1/neutron,ykaneko/quantum,watonyweng/neutron,cernops/neutron,yamahata/neutron,SamYaple/neutron,gkotton/neutron,waltBB/neutron_read,wolverineav/neutron,pnavarro/neutron,gkotton/neutron,ykaneko/neutron,silenci/neutron,vijayendrabvs/ssl-neutron,aristanetworks/arista-ovs-quantum,vbannai/neutron,armando-migliaccio/neutron,yamahata/tacker,tpaszkowski/quantum,leeseulstack/openstack,NeCTAR-RC/neutron,psiwczak/quantum,cloudbase/neutron-virtualbox,leeseuljeong/leeseulstack_neutron,antonioUnina/neutron,Stavitsky/neutron,yuewko/neutron,kaiweifan/neutron,leeseuljeong/leeseulstack_neutron,vijayendrabvs/ssl-neutron,netscaler/neutron,chitr/neutron,zhhf/charging,rossella/neutron,jacknjzhou/neutron,openstack/neutron,sasukeh/neutron,Juniper/neutron,vijayendrabvs/hap,CiscoSystems/vespa,takeshineshiro/neutron,kaiweifan/vse-lbaas-plugin-poc,savi-dev/quantum,SamYaple/neutron,watonyweng/neutron,citrix-openstack-build/neutron,skyddv/neutron,vijayendrabvs/ssl-neutron,eonpatapon/neutron,paninetworks/neutron,igor-toga/local-snat,CiscoSystems/QL3Proto,JianyuWang/neutron,redhat-openstack/neutron,klmitch/neutron,jumpojoy/neutron,xchenum/quantum-bug,wenhuizhang/neutron,Brocade-OpenSource/OpenStack-DNRM-Neutron,infobloxopen/neutron,beagles/neutron_hacking,kaiweifan/neutron,paninetworks/neutron,eayunstack/neutron,sajuptpm/neutron-ipam,waltBB/neutron_read,netscaler/neutron,antonioUnina/neutron,apporc/neutron,citrix-openstack-build/neutron,cloudbase/neutron,barnsnake351/neutron,rdo-management/neutron,CiscoSystems/neutron,cloudbase/neutron-virtualbox,wolverineav/neutron,jumpojoy/neutron,SmartInfrastructures/neutron,rossella/neutron,Comcast/neutron,CiscoSystems/vespa,bigswitch/neutron,Metaswitch/calico-neutron,vivekanand1101/neutron,igor-toga/local-snat,oeeagle/quantum,Juniper/contrail-dev-neutron,CiscoSystems/quantum,bigswitch/neutron,sebrandon1/neutron,glove747/liberty-neutron,zhhf/charging,magic0704/neutron,swdream/neutron,Comcast/neutron,Juniper/neutron,Juniper/contrail-dev-neutron,sileht/deb-openstack-quantum,neoareslinux/neutron,CiscoSystems/neutron,CiscoSystems/neutron,mandeepdhami/neutron,armando-migliaccio/neutron,mandeepdhami/neutron,rickerc/neutron_audit,xchenum/quantum,shahbazn/neutron,jerryz1982/neutron,rossella/neutron,huntxu/neutron,citrix-openstack-build/neutron,sileht/deb-openstack-quantum,FreescaleSemiconductor/quantum,vivekanand1101/neutron,vveerava/Openstack,yamahata/tacker,yanheven/neutron,dims/neutron,dims/neutron,vbannai/neutron,Stavitsky/neutron,miyakz1192/neutron,skyddv/neutron,aristanetworks/arista-ovs-quantum,SmartInfrastructures/neutron,yuewko/neutron,noironetworks/neutron,blueboxgroup/neutron,gopal1cloud/neutron,suneeth51/neutron,magic0704/neutron,openstack/neutron,Juniper/contrail-dev-neutron,neoareslinux/neutron,liqin75/vse-vpnaas-plugin,MaximNevrov/neutron,miyakz1192/neutron,tpaszkowski/quantum,yamt/neutron,mahak/neutron,jacknjzhou/neutron,blueboxgroup/neutron,blueboxgroup/neutron,rdo-management/neutron,leeseulstack/openstack,CiscoSystems/quantum,alexandrucoman/vbox-neutron-agent,cernops/neutron,jerryz1982/neutron