Fixing tests introduced by PR 500

* Changed assertTrue to assertEqual or assertGreater depending on the
  test for consistency.
* Added specific test for BZ #1076541
* Added positive update tests, blocked on BZ #1076541
* Added specific test for BZ #1076568
* Fixed positive deletion test to assert that organizations are no
  longer available after deletion. Currently blocked on BZ #1076568
CLI update command returns a dictionary with ID.

The update command for CLI will now return a dictionary containing the
ID for the object changed as well as the information that was changed.