CTest: put the box CO2 test first and the restart test last. Since the latter depends on the completion of the former, this ensures that the former is in fact completed also in a mildly parallel testing environment.

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@10171 2fb0f335-1f38-0410-981e-8018bf24f1b0