tmf.ui.swtbot: add filterview tests

tmf.ui.swtbot: add filterview tests

implements:
  * tracetype test
  * contains test
  * filter node test
  * apply test
  * filternode test
  * matches test
  * equals test
  * compare test

It does not:
  * import
  * export
these functions require access to native widgets

Change-Id: I00684956c065042add2b8ffbbf0ba9df57f01ab2
Signed-off-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/40407
Reviewed-by: Hudson CI
Reviewed-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Tested-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>