Added setUpClass() to create server and image

* Updated these files to add setUpClass() to create server and image
* using ComputeIntegrationFixture and to use that in tests.
* Removed unused imports

Change-Id: I0a643f2191a613934ed111b40e026137935ae399
Separated delete image positive tests from smoke

* Added setUpClass() to test_delete_image file to create server and
* image using ComputeIntegrationFixture and to use that in smoke test.
* Created new file test_delete_image_positive to move positive tests
* from test_delete_image.

Change-Id: I17338a9e311bce122ad29c654005a4ace8132993
Images API v2.0 Force User To See My Images

Implements 'force a user to see my images' test:
 - added a new test scenario - force a user to see my images.
 - refactored image fixtures.
 - reverted changes made on the image fixtures and made it a separate PR.
 - improved naming of variables.

Refactors the test to add tags.

Change-Id: I414c3a922346e86693fb2883ef5180aa7334472f
Images API v2.0 One-To-One Image Sharing Test

Implements one-to-one image sharing test:
 - added new test scenario 'one-to-one image sharing'
 - refactored fixtures
 - reverted changes on the image fixtures and made it a separate PR.
 - improve naming of variables.

Refactors to add tags to the test.

Change-Id: Ib179e364f7a3dd67796d29cc4b0216ca0b2a12bf
Images API v2.0 Remove All Shared Images From User List

Implements remove all shared images from user list test:
 - added a test scenario 'remove all shared images from user list'.
 - refactored image fixtures.
 - reverted changes on image fixtures and made it a separate PR.
 - improved naming of variables.

Refactors test to add tags.

Change-Id: Ia8d48102758e0d0799590c5ab0ec5411a6457228
Image API v2.0 Unshare Previously Shared Image

Implements unshare previously shared image test:
 - added a new test scenario - unshare previously shared
 image between two users.
 - reverted changes on the image fixtures and made it a separate PR.
 - improved naming of variables.

Refactors test to add tags.

Change-Id: I9b9a4e3f29a728d341c32ac0b1fe1a4cfa957b3b
Add get image member members schema tests

*Added get_image_member_schema test
*Added get_image_members_schema test

Change-Id: I57e5405a92c6806ab767134f11c77c4d0fdfc37d
Update images fixtures

*Added image_member_schema_json to images fixture
*Added image_members_schema_json to images fixture

Change-Id: I8c8e2a6de502466b2c2236e03d2e109852fd1909
Added stacktach_api positive smoke tests

Added few positive smoke tests to test stacky apis

Change-Id: I355a63a7c2b012bfcd60ceb921ec3b6c802c05d1
Merge "Separated delete image positive tests from smoke"
Merge "Added setUpClass() to create server and image"
Merge "Update images fixtures"
Merge "Add get image member members schema tests"
Merge "Images API v2.0 Remove All Shared Images From User List"
Merge "Correcting asserted exception"
Merge "Images API v2.0 One-To-One Image Sharing Test"
Merge "Image API v2.0 Unshare Previously Shared Image"
Merge "Added stacktach_api positive smoke tests"
Subject: combine tests

* combined the object update tests and added some assertions

Change-Id: I405b857e88b1b77fc4158322c6da467d329a79d8
Images API v2.0 Image Sharing, Deletion and Accessibility Cycle

Implements image sharing, deletion and accessibility cycle test:
 - added new test scenario: image sharing, deletion and accessibility cycle.
 - refactored image fixtures.
 - reverted changes on image fixtures and made it a separate PR.
 - improved naming of variables.

Refactors the tests and adds tags.

Change-Id: I01509aca865dca316e75dc8342574fa7affa4467