Make nova-network use Network object for deleting networks
Make nova-network use Network object for deleting networks

This makes nova-network manager use the Network object when
deleting networks. Since it results in the same underlying call
to the database, it doesn't affect tests at all.

Related to blueprint nova-network-objects

Change-Id: If45020b8264f05b12657bb27f836b9fc60964cd1

JianyuWang/nova,isyippee/nova,vladikr/nova_drafts,Yusuke1987/openstack_template,yatinkumbhare/openstack-nova,barnsnake351/nova,jianghuaw/nova,shail2810/nova,Tehsmash/nova,leilihh/nova,LoHChina/nova,mikalstill/nova,redhat-openstack/nova,whitepages/nova,j-carpentier/nova,openstack/nova,viggates/nova,iuliat/nova,rajalokan/nova,spring-week-topos/nova-week,alexandrucoman/vbox-nova-driver,noironetworks/nova,mgagne/nova,double12gzh/nova,luogangyi/bcec-nova,fnordahl/nova,bgxavier/nova,viggates/nova,adelina-t/nova,yosshy/nova,luogangyi/bcec-nova,badock/nova,phenoxim/nova,apporc/nova,rrader/nova-docker-plugin,apporc/nova,affo/nova,devendermishrajio/nova_test_latest,Juniper/nova,shahar-stratoscale/nova,angdraug/nova,gooddata/openstack-nova,cloudbase/nova,iuliat/nova,ruslanloman/nova,JianyuWang/nova,JioCloud/nova,rajalokan/nova,noironetworks/nova,rrader/nova-docker-plugin,saleemjaveds/https-github.com-openstack-nova,MountainWei/nova,jeffrey4l/nova,watonyweng/nova,maelnor/nova,alvarolopez/nova,mmnelemane/nova,sebrandon1/nova,CCI-MOC/nova,Yusuke1987/openstack_template,silenceli/nova,sebrandon1/nova,j-carpentier/nova,Francis-Liu/animated-broccoli,mandeepdhami/nova,klmitch/nova,CCI-MOC/nova,spring-week-topos/nova-week,blueboxgroup/nova,zzicewind/nova,MountainWei/nova,takeshineshiro/nova,vmturbo/nova,JioCloud/nova_test_latest,cloudbase/nova,orbitfp7/nova,devoid/nova,berrange/nova,BeyondTheClouds/nova,tanglei528/nova,Juniper/nova,jianghuaw/nova,hanlind/nova,eonpatapon/nova,felixma/nova,tianweizhang/nova,blueboxgroup/nova,devoid/nova,NeCTAR-RC/nova,projectcalico/calico-nova,watonyweng/nova,eharney/nova,tangfeixiong/nova,jianghuaw/nova,bigswitch/nova,vmturbo/nova,raildo/nova,klmitch/nova,affo/nova,rahulunair/nova,phenoxim/nova,whitepages/nova,alexandrucoman/vbox-nova-driver,Stavitsky/nova,CiscoSystems/nova,cyx1231st/nova,mandeepdhami/nova,silenceli/nova,nikesh-mahalka/nova,Tehsmash/nova,tanglei528/nova,petrutlucian94/nova_dev,mikalstill/nova,barnsnake351/nova,hanlind/nova,orbitfp7/nova,cloudbase/nova-virtualbox,mahak/nova,openstack/nova,eayunstack/nova,devendermishrajio/nova,zaina/nova,kimjaejoong/nova,tudorvio/nova,kimjaejoong/nova,isyippee/nova,rajalokan/nova,dims/nova,akash1808/nova,TwinkleChawla/nova,Metaswitch/calico-nova,tealover/nova,mmnelemane/nova,eonpatapon/nova,dawnpower/nova,berrange/nova,felixma/nova,JioCloud/nova,mahak/nova,BeyondTheClouds/nova,devendermishrajio/nova_test_latest,tianweizhang/nova,alaski/nova,varunarya10/nova_test_latest,belmiromoreira/nova,klmitch/nova,dims/nova,scripnichenko/nova,tudorvio/nova,dawnpower/nova,OpenAcademy-OpenStack/nova-scheduler,gooddata/openstack-nova,belmiromoreira/nova,hanlind/nova,akash1808/nova_test_latest,LoHChina/nova,rahulunair/nova,takeshineshiro/nova,rahulunair/nova,cernops/nova,tangfeixiong/nova,jianghuaw/nova,petrutlucian94/nova,thomasem/nova,joker946/nova,Stavitsky/nova,ted-gould/nova,fnordahl/nova,OpenAcademy-OpenStack/nova-scheduler,ewindisch/nova,redhat-openstack/nova,scripnichenko/nova,edulramirez/nova,rajalokan/nova,sebrandon1/nova,joker946/nova,Francis-Liu/animated-broccoli,edulramirez/nova,double12gzh/nova,Juniper/nova,ewindisch/nova,akash1808/nova_test_latest,zaina/nova,openstack/nova,badock/nova,TwinkleChawla/nova,virtualopensystems/nova,adelina-t/nova,gooddata/openstack-nova,gooddata/openstack-nova,leilihh/novaha,zhimin711/nova,CloudServer/nova,ruslanloman/nova,zzicewind/nova,Metaswitch/calico-nova,cernops/nova,ted-gould/nova,cernops/nova,tealover/nova,vmturbo/nova,alvarolopez/nova,klmitch/nova,saleemjaveds/https-github.com-openstack-nova,devendermishrajio/nova,cloudbase/nova-virtualbox,cyx1231st/nova,thomasem/nova,mikalstill/nova,mgagne/nova,CEG-FYP-OpenStack/scheduler,alaski/nova,shail2810/nova,maelnor/nova,shahar-stratoscale/nova,virtualopensystems/nova,vladikr/nova_drafts,petrutlucian94/nova_dev,JioCloud/nova_test_latest,Juniper/nova,BeyondTheClouds/nova,nikesh-mahalka/nova,vmturbo/nova,eharney/nova,CloudServer/nova,varunarya10/nova_test_latest,CEG-FYP-OpenStack/scheduler,bigswitch/nova,yosshy/nova,jeffrey4l/nova,NeCTAR-RC/nova,leilihh/nova,akash1808/nova,petrutlucian94/nova,bgxavier/nova,CiscoSystems/nova,eayunstack/nova,raildo/nova,cloudbase/nova,yatinkumbhare/openstack-nova,projectcalico/calico-nova,leilihh/novaha,zhimin711/nova,mahak/nova,angdraug/nova