Updated openstack/openstack
Project: openstack/tempest  eb324b0de4d837ac1e13e208fbc1d7bb80102850
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Verify the response status of create delete Image

This patch adds the JSON Schema for response status of Nova V2 Image
create, delete delete meta APIs and validate the response status with
added JSON Schema to block the backward incompatibility change in the
future.

create image, delete image & delete image meta does not return the
response body. Response status of above APIs is below-
create image - 202
delete image - 204
delete image meta - 204

Partially implements blueprint nova-api-attribute-test

Change-Id: Ia4864b3b7145a69dc257aba7f7612745b1b8254f