Add add image tag negative tests

*Refactored add image tag test module including updating tests to reflect cloud cafe changes and aesthetic changes
*Renamed test module to test_add_image_tag_negative
*Updated id to image_id for better readability

Change-Id: I0b27a5a1aed2593210e47029928655069d32e003
Add image member life cycle and image tag life cycle tests

*Updated image member life cycle module to reflect cloud cafe changes
*Updated image tag life cycle module to reflect cloud cafe changes
*Updated modules aesthetic consistency
*Removed crud from test names

Change-Id: Iadcb3c995079a7870c7bd57e6623917b231c0715
Add get images schema and image life cycle tests

*Updated get images schema module to reflect cloud cafe changes
*Updated image life cycle module to reflect cloud cafe changes
*Updated modules aesthetic consistency
*Removed happy_path and crud from test names

Change-Id: I582c35f09227ced87740e11433c652d39ef95723
Add delete image member and delete image negative tests

*Updated delete image member module to reflect cloud cafe changes
*Updated delete image negative module to reflect cloud cafe changes
*Updated modules aesthetic consistency
*Removed happy_path from test name
*Updated id to image_id for better readability
*Added validation step for image member
*Removed delete_members module as the tests are covered in the delete_image_member module

Change-Id: Ie90a39c3621b41c5e9692bb17b561fbbd1b1700f
Images API v2.0 Image Discovery Shared Images Owned By User

Implements image discovery of shared images owned by user:
 - added a new test scenario.
 - refactored fixtures.
 - reverted changes on the image fixtures and made it a separate PR.
 - improved naming of variables.

Change-Id: I36b5fd4c8ebc9c3b0f7a85468911f4493969f687
Subject: Add extended accept header test

* added test for bug fix #1202453 and expanded accept headers

Change-Id: I4b1a31acbc0817f6334bb819beb810d20fabe2f1
Update images fixtures

*Added commonly used variables to fixtures module

Change-Id: I1d7975979dacdedb976f70080459de20279240b5
Added x-delete-at regression test.

Change-Id: Ifc4b6f2ee7439e1a4e4e71550dfa4048a58c108a
Merge "Subject: Add extended accept header test"
Fixed stacky negative smoke tests

Fixed few stacky negative smoke tests which were failing
because the response now returns an object which
doesnt have Error & Message as its attributes.
Asserting on the response.reason for few tests.
Added msg as a class variable to Stacktach fixtures.

Change-Id: Iff86502742907bd5a279d680e54c8e14f4a50757
Merge "Added x-delete-at regression test."
Merge "Fixed stacky negative smoke tests"
Merge "Add get images schema and image life cycle tests"
Updating all client lib tests

* Fixing Order API smoke tests
* Fixing Orders functional tests
* Fixing Secrets API smoke tests
* Fixing Secrets API functional tests
* Fixing pep8 issues [After submitted for review]

Change-Id: Id75842640e486be594453938e6b97074b6065a91
Merge "Add image member life cycle and image tag life cycle tests"
Merge "Add add image tag negative tests"
Merge "Update images fixtures"
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
Updates from review comments

Change-Id: Ibdee13c251459ca8714534bcb087ef52862ef337
Merge "Updates from review comments"