Add test for rocalutionSolver

opm/simulators/linalg/bda/rocalutionSolverBackend.cpp

@@ -49,6 +49,11 @@ rocalutionSolverBackend<block_size>::rocalutionSolverBackend(int verbosity_, int
 template <unsigned int block_size>
 rocalutionSolverBackend<block_size>::~rocalutionSolverBackend() {
     rocalution::stop_rocalution();
+
+    // these should be automatically release when rocalutionSolverBackend is destroyed
+    // however, without these, the test_rocalutionSolver segfaults
+    roc_solver.release();
+    roc_prec.release();
 }