[test] fix co2 tests for Dumux 2.x and Dune 2.6 (!967) · Merge requests · dumux-repositories / dumux

Merged Bernd Flemisch requested to merge cherry-pick-08da3c23 into releases/2.9 May 07, 2018

Intersections don't offer boundaryId() anymore since Dune 2.6. ALUGrid still offers it via impl(). Employ this if Dune >= 2.6 is used.

(cherry picked from commit 08da3c23)

[test] fix co2 tests for Dumux 2.x and Dune 2.6