Add Cinder V2 API to keystone catalog

Support both SQL and templated keystone backend. This will add an
additional endpoint to go with v1.

Change-Id: I19168d55c2ffad2b1cd668b6c1341dc8e49e9c1f
Generate heat images for tempest tests

This requires HEAT_CREATE_TEST_IMAGE to be set for any images
to be created.

If the file (files/fedora-vm-heat-cfntools-tempest.qcow2) already
exists then disk-image-create will not be called, and the existing
image file will be registered with glance. This is most likely to
happen in the following scenarios:
- a second run of stack.sh
- the image has been pre-built elsewhere (such as during devstack-gate
  image building)
Change-Id: I276573a20927e72f2cb68784f655c1ba1913ae8a
Merge "Add Cinder V2 API to keystone catalog"
Merge "Generate heat images for tempest tests"