Removal of re-switching of rbac-role from tearDown

Currently, for every test case class, we need to add
re-switching rbac role in tearDown method. Thus for
every testcase using the tearDown method becomes
mandatory.

This patch removes tearDown dependency for re-switching
rbac-role.

Co-Authored-By: Mh Raies <mh.raies@ericsson.com>
Co-Authored-By: Felipe Monteiro <felipe.monteiro@att.com>

Implements: blueprint refactor-teardown-switch-roles
Change-Id: I3f0026533255c87b8128f2bf3a4aa488382a2523
85 files changed