Allow tests from test_dhcp_agent run independently
Allow tests from test_dhcp_agent run independently

Some tests from test_dhcp_agent depend on each other
and cannot be run in arbitrary order. TestDhcpAgent
and TestDhcpAgentEventHandler need config options that
are initialized in other tests. This patch eliminates
such dependencies.

Fixes: bug #1125951
Change-Id: I10bc46a5e1244ea0f7a05a20bb162c50303f282e

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