Automate the Anaconda_Save_Traceback_to_Bugzilla_Text test case.
    
    This PR adds a new test that automates the above mentioned test case.
    It starts the installation in text mode using the `install_text` test
    case, which it interrupts using the Anaconda crash trigger.
    When the crash happens, it goes through the process of reporting
    the bug to Bugzilla, checks that Bugzilla sends a positive
    confirmation of the action, but also performs some REST API
    calls to do a proper check and then it closes the bug to clean up.