Cleanup tools/hacking using flake8
Cleanup tools/hacking using flake8

Change-Id: Ia151f265bf62e6704de6cc2f2c01963be9e2dd69

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