Fix 500 raised on disassociate_floatingips when out of sync
Fix 500 raised on disassociate_floatingips when out of sync

If one deletes NAT rules directly from NVP and not through quantum,
an error will be raised when deleting a port that is associated with
the floating ip. This patch catches the NotFound exception and logs
it so that the port can successfully be deleted.

Fixes bug: 1177176

Change-Id: Ia7d0b94957d0c6b014d242439245b0e4fa9de40d

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