Add add image member and add image tag tests

*Updated add image member module to reflect cloud cafe changes
*Updated add image tag module to reflect cloud cafe changes
*Updated modules aesthetic consistency
*Removed happy_path from test names
*Updated resource management of images to be used as queue
*Removed static values for offsets
*Updated test steps to reflect how images are created outside of the tests

Change-Id: I529877b8b311e1b42df5166d30dc2d63d7df4029
Merge "Add add image member and add image tag tests"