Goal of this testcase is just to ensure that some table cell borders
exist while some others do not. There is no reason to do exact width
comparison which is causing errors on some MacOS configurations.

Change-Id: I574c29220696ae654dea2db0398790a440efd83b
Reviewed-on: https://gerrit.libreoffice.org/39015Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>