Workstation replaced gedit with gnome-text-editor. This updates
the needles and also changes the name used for 'tagging' the
application for the core_applications test.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
This PR adds the following:
* moves out the presetting procedures, so that two long terminal tests do not have
to run twice
* add methods for application to register when successfully started
* adds a test that checks if all required applications have registered
