[test.linearelliptic-swipdg] update
[test.linearelliptic-swipdg] update

* added TestCases::ESV2007< SGrid< 2, 2 > >
* added TestCases::Spe10::Model1< SGrid< 2, 2 > >
* added TestCases::Spe10::Model1< ALUGrid< 2, 2, simplex, conforming > >
* fix disabled tests

tobiasleibner/dune-hdd,pymor/dune-hdd,tobiasleibner/dune-hdd,pymor/dune-hdd