Move a test that now appears to work.

git-svn-id: https://svn.dealii.org/trunk@14862 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/tests/fail/line_coarsening_3d.cc b/tests/deal.II/line_coarsening_3d.cc
similarity index 100%
rename from tests/fail/line_coarsening_3d.cc
rename to tests/deal.II/line_coarsening_3d.cc

diff --git a/tests/fail/line_coarsening_3d/cmp/generic b/tests/deal.II/line_coarsening_3d/cmp/generic
similarity index 100%
rename from tests/fail/line_coarsening_3d/cmp/generic
rename to tests/deal.II/line_coarsening_3d/cmp/generic