bnc#870237: wrong text position in grouped list

In grouped list text area does not cover the whole
shape but just a part of it at the top.
To get the same visual effect modify text distance
attribute.

(cherry picked from commit 53c376d35b7223d53e8c9403390afe53d1f69089)

Conflicts:
	sd/qa/unit/import-tests.cxx

Change-Id: I32f30d0afbc1975f940c4562ec65f46596e97060
Reviewed-on: https://gerrit.libreoffice.org/9569
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>