We do not use it in OPM, but for whatever reason I was experiencing
linker errors (unresolved symbol) when compiling ebos with DUNE 2.6
and g++-8.2. dune-grid exports its alberta wrapper libraries in dune-grid_LIBRARIES. Previously this did not pose a problem. Somehow it does now. If
I strip the libraries from the linker line everything is fine but this
is not a good solution.
Therefore I have added a test for Alberta that is triggered by the test of
dune-grid.
