Remove locals() from messages in virt/disk/api.py
Remove locals() from messages in virt/disk/api.py

No functional changes, just removing something which annoyed me
when I read the code.

Change-Id: Ia2d232d6ee2e61d3785b57798391474b8e99dee1

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