Fix incorrect LOG.error usage in _compare_cpu
Fix incorrect LOG.error usage in _compare_cpu

bug 1076308

Change-Id: I30a6447f005e708107dc01578664a4cb2bb14439

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