ignore legacy OpenOffice.org-*-version, when a LibreOffice-*-version is given

Change-Id: Ie5b6ffee07b6e5ebf922bad1b4a268ff636412c9
Reviewed-on: https://gerrit.libreoffice.org/8853
Reviewed-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>
Tested-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>