Add V2.1 API tests parity with V2 API tests
Add V2.1 API tests parity with V2 API tests

There are some basic wsgi stack tests in test_api.py. But it is only
for V2 API. This patch adds V2.1 API tests on it.

Partial-Bug: #1462901
Change-Id: Ib0d9c15ca37a12c661a8abc8b8e59deab91f0d80

rajalokan/nova,raildo/nova,vmturbo/nova,klmitch/nova,Juniper/nova,fnordahl/nova,nikesh-mahalka/nova,ted-gould/nova,vmturbo/nova,scripnichenko/nova,shail2810/nova,JianyuWang/nova,edulramirez/nova,isyippee/nova,zhimin711/nova,CCI-MOC/nova,TwinkleChawla/nova,cernops/nova,mahak/nova,apporc/nova,zzicewind/nova,takeshineshiro/nova,mikalstill/nova,openstack/nova,gooddata/openstack-nova,cyx1231st/nova,barnsnake351/nova,cyx1231st/nova,hanlind/nova,cloudbase/nova,JianyuWang/nova,MountainWei/nova,nikesh-mahalka/nova,sebrandon1/nova,cernops/nova,Juniper/nova,vmturbo/nova,dims/nova,MountainWei/nova,sebrandon1/nova,fnordahl/nova,yosshy/nova,openstack/nova,BeyondTheClouds/nova,edulramirez/nova,alaski/nova,scripnichenko/nova,isyippee/nova,noironetworks/nova,sebrandon1/nova,klmitch/nova,cloudbase/nova,hanlind/nova,ted-gould/nova,rajalokan/nova,gooddata/openstack-nova,phenoxim/nova,rajalokan/nova,Juniper/nova,mmnelemane/nova,cloudbase/nova,BeyondTheClouds/nova,takeshineshiro/nova,rajalokan/nova,rahulunair/nova,jianghuaw/nova,apporc/nova,whitepages/nova,Francis-Liu/animated-broccoli,TwinkleChawla/nova,mikalstill/nova,whitepages/nova,gooddata/openstack-nova,rahulunair/nova,dims/nova,mahak/nova,phenoxim/nova,jianghuaw/nova,mmnelemane/nova,CEG-FYP-OpenStack/scheduler,noironetworks/nova,zzicewind/nova,cernops/nova,klmitch/nova,bigswitch/nova,Juniper/nova,jianghuaw/nova,rahulunair/nova,j-carpentier/nova,openstack/nova,klmitch/nova,hanlind/nova,alaski/nova,CCI-MOC/nova,felixma/nova,NeCTAR-RC/nova,barnsnake351/nova,NeCTAR-RC/nova,jianghuaw/nova,bigswitch/nova,BeyondTheClouds/nova,devendermishrajio/nova,watonyweng/nova,devendermishrajio/nova,raildo/nova,mahak/nova,yosshy/nova,j-carpentier/nova,vmturbo/nova,Francis-Liu/animated-broccoli,mikalstill/nova,watonyweng/nova,felixma/nova,zhimin711/nova,CEG-FYP-OpenStack/scheduler,shail2810/nova,gooddata/openstack-nova