Updated openstack/openstack
Project: openstack/tempest  5cff5ca7786e6be4a3d1ed95dcb9b679f8b1032d

Add quota delete test to cinder

This submission is to validate delete quota set in
volumes quota set test case. Hence added delete quota
set method in both XMl and JSON interfaces.

Change-Id: I217355bfc7696b93bc1f1388635cbb9bf8850199