Allow TNNMG to use Solvers::LinearSolver object

2 jobs for feature/new_tnnmg_allow_linearSolver in 2 minutes and 41 seconds (queued for 2 seconds)
latest
Status Name Job ID Coverage
  Test
passed dune:git--clang #6020

00:02:34

passed dune:git--gcc #6021

00:02:41