Consolidate use api request version header
Consolidate use api request version header

Finish off use of a definition of what the api request version header is rather
than literally copy it through the tests. This was partially done in the dependent
changeset I3ea2b2982c5f792c82832d772ae951b157da8b39

Partially implements blueprint api-microversions

Change-Id: I029d0f4d9b11a47925aaa0faaa97384f2af80ba9

MountainWei/nova,tangfeixiong/nova,zaina/nova,isyippee/nova,scripnichenko/nova,takeshineshiro/nova,Juniper/nova,tudorvio/nova,Juniper/nova,NeCTAR-RC/nova,barnsnake351/nova,devendermishrajio/nova,noironetworks/nova,klmitch/nova,eonpatapon/nova,yatinkumbhare/openstack-nova,vmturbo/nova,apporc/nova,CEG-FYP-OpenStack/scheduler,ruslanloman/nova,jianghuaw/nova,JioCloud/nova,gooddata/openstack-nova,zhimin711/nova,fnordahl/nova,kimjaejoong/nova,shail2810/nova,phenoxim/nova,CCI-MOC/nova,LoHChina/nova,nikesh-mahalka/nova,vmturbo/nova,rajalokan/nova,fnordahl/nova,kimjaejoong/nova,sebrandon1/nova,barnsnake351/nova,whitepages/nova,ted-gould/nova,cloudbase/nova-virtualbox,watonyweng/nova,Francis-Liu/animated-broccoli,thomasem/nova,edulramirez/nova,alvarolopez/nova,rahulunair/nova,tealover/nova,j-carpentier/nova,belmiromoreira/nova,raildo/nova,alaski/nova,klmitch/nova,sebrandon1/nova,iuliat/nova,jeffrey4l/nova,adelina-t/nova,JioCloud/nova_test_latest,gooddata/openstack-nova,blueboxgroup/nova,alexandrucoman/vbox-nova-driver,alvarolopez/nova,cloudbase/nova-virtualbox,Yusuke1987/openstack_template,klmitch/nova,devendermishrajio/nova_test_latest,yosshy/nova,TwinkleChawla/nova,Tehsmash/nova,rajalokan/nova,double12gzh/nova,JianyuWang/nova,tealover/nova,adelina-t/nova,belmiromoreira/nova,gooddata/openstack-nova,cyx1231st/nova,CloudServer/nova,mandeepdhami/nova,cernops/nova,Juniper/nova,dims/nova,jianghuaw/nova,Stavitsky/nova,bgxavier/nova,JioCloud/nova_test_latest,cloudbase/nova,cyx1231st/nova,raildo/nova,vmturbo/nova,mahak/nova,bgxavier/nova,apporc/nova,ted-gould/nova,noironetworks/nova,akash1808/nova,hanlind/nova,joker946/nova,mikalstill/nova,mmnelemane/nova,MountainWei/nova,akash1808/nova_test_latest,varunarya10/nova_test_latest,alexandrucoman/vbox-nova-driver,vmturbo/nova,edulramirez/nova,NeCTAR-RC/nova,dawnpower/nova,TwinkleChawla/nova,tudorvio/nova,jianghuaw/nova,tangfeixiong/nova,JioCloud/nova,whitepages/nova,felixma/nova,rajalokan/nova,hanlind/nova,LoHChina/nova,CloudServer/nova,sebrandon1/nova,mikalstill/nova,Juniper/nova,nikesh-mahalka/nova,petrutlucian94/nova,mandeepdhami/nova,akash1808/nova_test_latest,hanlind/nova,BeyondTheClouds/nova,akash1808/nova,BeyondTheClouds/nova,shail2810/nova,thomasem/nova,jianghuaw/nova,BeyondTheClouds/nova,openstack/nova,zhimin711/nova,watonyweng/nova,bigswitch/nova,devendermishrajio/nova_test_latest,klmitch/nova,alaski/nova,mahak/nova,yatinkumbhare/openstack-nova,openstack/nova,dawnpower/nova,Yusuke1987/openstack_template,Tehsmash/nova,yosshy/nova,j-carpentier/nova,joker946/nova,varunarya10/nova_test_latest,JianyuWang/nova,jeffrey4l/nova,phenoxim/nova,cernops/nova,isyippee/nova,rahulunair/nova,double12gzh/nova,cloudbase/nova,openstack/nova,scripnichenko/nova,bigswitch/nova,petrutlucian94/nova,mahak/nova,mikalstill/nova,dims/nova,blueboxgroup/nova,zzicewind/nova,iuliat/nova,CCI-MOC/nova,rahulunair/nova,rajalokan/nova,ruslanloman/nova,CEG-FYP-OpenStack/scheduler,takeshineshiro/nova,Stavitsky/nova,zaina/nova,devendermishrajio/nova,eonpatapon/nova,zzicewind/nova,cernops/nova,gooddata/openstack-nova,mmnelemane/nova,cloudbase/nova,felixma/nova,Francis-Liu/animated-broccoli