Call plug_vifs() for all instances in init_host
Call plug_vifs() for all instances in init_host

Remove the assumption that we are using the "flat" networking model
and there is a single bridge interface for all instances on a given
compute node.  Instead simply call plug_vifs() for each instance in
init_host.

Fixes bug 1083784

Change-Id: I4b367deb6851c06c80a4bdf0bd806cf5e867bb0a

mgagne/nova,Stavitsky/nova,kimjaejoong/nova,TieWei/nova,alaski/nova,nikesh-mahalka/nova,noironetworks/nova,rahulunair/nova,mandeepdhami/nova,tealover/nova,yatinkumbhare/openstack-nova,raildo/nova,yosshy/nova,CCI-MOC/nova,Yusuke1987/openstack_template,sridevikoushik31/openstack,eonpatapon/nova,petrutlucian94/nova,rajalokan/nova,JianyuWang/nova,alvarolopez/nova,eonpatapon/nova,fajoy/nova,LoHChina/nova,gooddata/openstack-nova,varunarya10/nova_test_latest,jeffrey4l/nova,qwefi/nova,OpenAcademy-OpenStack/nova-scheduler,zzicewind/nova,viggates/nova,sridevikoushik31/nova,jianghuaw/nova,cernops/nova,fnordahl/nova,dawnpower/nova,mikalstill/nova,eayunstack/nova,orbitfp7/nova,citrix-openstack-build/nova,ted-gould/nova,affo/nova,maoy/zknova,zhimin711/nova,eharney/nova,barnsnake351/nova,mahak/nova,devendermishrajio/nova,zaina/nova,JioCloud/nova,affo/nova,virtualopensystems/nova,bclau/nova,phenoxim/nova,Yuriy-Leonov/nova,eharney/nova,leilihh/nova,JioCloud/nova_test_latest,plumgrid/plumgrid-nova,eayunstack/nova,devoid/nova,viggates/nova,Juniper/nova,jianghuaw/nova,rajalokan/nova,shail2810/nova,CEG-FYP-OpenStack/scheduler,citrix-openstack-build/nova,scripnichenko/nova,Francis-Liu/animated-broccoli,ruslanloman/nova,TwinkleChawla/nova,maelnor/nova,apporc/nova,spring-week-topos/nova-week,iuliat/nova,sacharya/nova,houshengbo/nova_vmware_compute_driver,vmturbo/nova,MountainWei/nova,takeshineshiro/nova,rickerc/nova_audit,SUSE-Cloud/nova,houshengbo/nova_vmware_compute_driver,belmiromoreira/nova,Triv90/Nova,shail2810/nova,silenceli/nova,plumgrid/plumgrid-nova,jeffrey4l/nova,CiscoSystems/nova,zaina/nova,rajalokan/nova,ewindisch/nova,klmitch/nova,Triv90/Nova,bigswitch/nova,sebrandon1/nova,whitepages/nova,devendermishrajio/nova,tudorvio/nova,cloudbase/nova,sridevikoushik31/nova,blueboxgroup/nova,leilihh/nova,Yuriy-Leonov/nova,iuliat/nova,bigswitch/nova,dims/nova,DirectXMan12/nova-hacking,yrobla/nova,klmitch/nova,Juniper/nova,mahak/nova,sridevikoushik31/nova,imsplitbit/nova,sridevikoushik31/openstack,luogangyi/bcec-nova,Juniper/nova,devendermishrajio/nova_test_latest,dstroppa/openstack-smartos-nova-grizzly,vmturbo/nova,Tehsmash/nova,gooddata/openstack-nova,yrobla/nova,thomasem/nova,saleemjaveds/https-github.com-openstack-nova,apporc/nova,NeCTAR-RC/nova,projectcalico/calico-nova,imsplitbit/nova,j-carpentier/nova,NeCTAR-RC/nova,maheshp/novatest,virtualopensystems/nova,felixma/nova,mmnelemane/nova,JioCloud/nova_test_latest,petrutlucian94/nova,openstack/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,Metaswitch/calico-nova,spring-week-topos/nova-week,bclau/nova,isyippee/nova,double12gzh/nova,angdraug/nova,BeyondTheClouds/nova,phenoxim/nova,bgxavier/nova,hanlind/nova,saleemjaveds/https-github.com-openstack-nova,klmitch/nova,barnsnake351/nova,alexandrucoman/vbox-nova-driver,TwinkleChawla/nova,redhat-openstack/nova,qwefi/nova,badock/nova,ted-gould/nova,dims/nova,hanlind/nova,isyippee/nova,rrader/nova-docker-plugin,OpenAcademy-OpenStack/nova-scheduler,cloudbase/nova,joker946/nova,ntt-sic/nova,adelina-t/nova,thomasem/nova,leilihh/novaha,JioCloud/nova,shootstar/novatest,yrobla/nova,projectcalico/calico-nova,tanglei528/nova,DirectXMan12/nova-hacking,fnordahl/nova,angdraug/nova,ruslanloman/nova,zzicewind/nova,petrutlucian94/nova_dev,SUSE-Cloud/nova,Triv90/Nova,CCI-MOC/nova,kimjaejoong/nova,cernops/nova,tangfeixiong/nova,felixma/nova,dstroppa/openstack-smartos-nova-grizzly,sridevikoushik31/openstack,jianghuaw/nova,rahulunair/nova,tealover/nova,varunarya10/nova_test_latest,CloudServer/nova,aristanetworks/arista-ovs-nova,berrange/nova,Juniper/nova,aristanetworks/arista-ovs-nova,shahar-stratoscale/nova,takeshineshiro/nova,vladikr/nova_drafts,bgxavier/nova,petrutlucian94/nova_dev,akash1808/nova,mikalstill/nova,watonyweng/nova,rahulunair/nova,tanglei528/nova,yosshy/nova,edulramirez/nova,Francis-Liu/animated-broccoli,adelina-t/nova,mahak/nova,gooddata/openstack-nova,sridevikoushik31/nova,DirectXMan12/nova-hacking,shootstar/novatest,luogangyi/bcec-nova,cyx1231st/nova,CEG-FYP-OpenStack/scheduler,rrader/nova-docker-plugin,rickerc/nova_audit,sebrandon1/nova,raildo/nova,BeyondTheClouds/nova,gspilio/nova,maelnor/nova,MountainWei/nova,dawnpower/nova,leilihh/novaha,tianweizhang/nova,gooddata/openstack-nova,mmnelemane/nova,rajalokan/nova,blueboxgroup/nova,vmturbo/nova,dstroppa/openstack-smartos-nova-grizzly,hanlind/nova,redhat-openstack/nova,aristanetworks/arista-ovs-nova,watonyweng/nova,akash1808/nova_test_latest,alaski/nova,CiscoSystems/nova,orbitfp7/nova,scripnichenko/nova,maheshp/novatest,sebrandon1/nova,JianyuWang/nova,vmturbo/nova,TieWei/nova,yatinkumbhare/openstack-nova,zhimin711/nova,shahar-stratoscale/nova,ewindisch/nova,akash1808/nova,cloudbase/nova,badock/nova,noironetworks/nova,mandeepdhami/nova,tudorvio/nova,fajoy/nova,berrange/nova,cyx1231st/nova,jianghuaw/nova,cloudbau/nova,mgagne/nova,Yusuke1987/openstack_template,devendermishrajio/nova_test_latest,Metaswitch/calico-nova,belmiromoreira/nova,maoy/zknova,gspilio/nova,cloudbase/nova-virtualbox,cloudbase/nova-virtualbox,vladikr/nova_drafts,tangfeixiong/nova,gspilio/nova,edulramirez/nova,Stavitsky/nova,sacharya/nova,openstack/nova,alexandrucoman/vbox-nova-driver,mikalstill/nova,ntt-sic/nova,nikesh-mahalka/nova,devoid/nova,houshengbo/nova_vmware_compute_driver,LoHChina/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,silenceli/nova,BeyondTheClouds/nova,fajoy/nova,cloudbau/nova,whitepages/nova,tianweizhang/nova,double12gzh/nova,joker946/nova,klmitch/nova,akash1808/nova_test_latest,cernops/nova,Tehsmash/nova,maoy/zknova,maheshp/novatest,CloudServer/nova,j-carpentier/nova,openstack/nova,alvarolopez/nova