updated setUpClass method with decorator
Merge pull request #1646 from sghai/fix-test

Updated setUpClass method with decorator and using alpha string for org name
Method waiting for async task now return foreman task info or JSON repsonse.

Fix the robottelo/test_entitiy delete_manifest tests
Update unit tests for Organization.delete_manifest

Drop two test methods:

* `OrganizationTestCase.test_delete_manifest_200`
* `OrganizationTestCase.test_delete_manifest_202`

Add method `OrganizationTestCase.test_delete_manifest` to replace the two above.
This new test method is more thorough than the tests it replaces, as it covers
the following four possiblities:

* `synchronize` arg to `delete_manifest` is `True`, server returns HTTP 200.
* `synchronize` arg to `delete_manifest` is `True`, server returns HTTP 202.
* `synchronize` arg to `delete_manifest` is `False`, server returns HTTP 200.
* `synchronize` arg to `delete_manifest` is `False`, server returns HTTP 202.
Merge pull request #1647 from kbidarkar/fix-notaskid

Methods waiting for async task now return foreman task info or JSON repsonse
Adjust and fix content view code

Make `ContentView.publish` and `ContentViewVersion.promote` return the full JSON
response from the server. Fix existing usages of those methods.

Many usages of those methods are in module `tests.foreman.api.test_contentview`.
Walk through this module and severely update some tests in this module in
addition to fixing existing usages of the aforementioned methods. In particular:

1. Collapse `ContentViewPublishTestCase` and `ContentViewPromoteTestCase` into
   `CVPublishPromoteTestCase`. Fix the `setUpClass` method by changing the
   `self` parameter to `cls`, and make the method generate just specialized
   objects instead of a mix of dicts and specialized objects.
2. Drop the `_publish` and `_promote` private helper functions.
3. Halve the number of test methods, but make each test method more compact and
   thorough.