make get_all_bw_usage() signature match for fake virt driver.
make get_all_bw_usage() signature match for fake virt driver.

Change-Id: Ia96349275321f25da55845d73b212bb7c820f3d4

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