- make the DocumentIndex and the DocumentSettings test against XServiceInfo and
  XComponent, if applicable
- fix SwXDocumentSettings implementation name to meet expectations, almost [API CHANGE]
- leave out tests on Desktop->terminate() for now though

Change-Id: I1e1ab69dd6f6aa67f2cb9291a5665f3f94ff4a38
Reviewed-on: https://gerrit.libreoffice.org/69339
Tested-by: Jenkins
Reviewed-by: Björn Michaelsen <bjoern.michaelsen@libreoffice.org>