COMP: TestGL2PSMathTextActor3D regression

TestGL2PSMathTextActor3D is failing on all platforms. Seems to be a
zbuffer problem. Clipping planes should be reset after manual movement
of camera.

Change-Id: I3a7a74bf55c701c92535946210bcf14a98e9cf91
Merge topic 'Failing_TestGL2PSMathTextActor3D' into master

4ba6068b COMP: TestGL2PSMathTextActor3D regression