Testsuite: Guard trilinos tests using muelu

diff --git a/tests/mpi/muelu_periodicity.with_trilinos=true.mpirun=3.output b/tests/mpi/muelu_periodicity.with_trilinos=11.14.mpirun=3.output
similarity index 100%
rename from tests/mpi/muelu_periodicity.with_trilinos=true.mpirun=3.output
rename to tests/mpi/muelu_periodicity.with_trilinos=11.14.mpirun=3.output

diff --git a/tests/mpi/muelu_periodicity.with_trilinos=true.mpirun=5.output b/tests/mpi/muelu_periodicity.with_trilinos=11.14.mpirun=5.output
similarity index 100%
rename from tests/mpi/muelu_periodicity.with_trilinos=true.mpirun=5.output
rename to tests/mpi/muelu_periodicity.with_trilinos=11.14.mpirun=5.output

diff --git a/tests/mpi/muelu_periodicity.with_trilinos=true.mpirun=7.output b/tests/mpi/muelu_periodicity.with_trilinos=11.14.mpirun=7.output
similarity index 100%
rename from tests/mpi/muelu_periodicity.with_trilinos=true.mpirun=7.output
rename to tests/mpi/muelu_periodicity.with_trilinos=11.14.mpirun=7.output

diff --git a/tests/trilinos/precondition_muelu_dgp.with_64bit_indices=off.output b/tests/trilinos/precondition_muelu_dgp.with_trilinos=11.14.with_64bit_indices=off.output
similarity index 100%
rename from tests/trilinos/precondition_muelu_dgp.with_64bit_indices=off.output
rename to tests/trilinos/precondition_muelu_dgp.with_trilinos=11.14.with_64bit_indices=off.output

diff --git a/tests/trilinos/precondition_muelu_q_iso_q1.with_64bit_indices=off.output b/tests/trilinos/precondition_muelu_q_iso_q1.with_trilinos=11.14.with_64bit_indices=off.output
similarity index 100%
rename from tests/trilinos/precondition_muelu_q_iso_q1.with_64bit_indices=off.output
rename to tests/trilinos/precondition_muelu_q_iso_q1.with_trilinos=11.14.with_64bit_indices=off.output

diff --git a/tests/trilinos/precondition_muelu_smoother.with_64bit_indices=off.output b/tests/trilinos/precondition_muelu_smoother.with_trilinos=11.14.with_64bit_indices=off.output
similarity index 100%
rename from tests/trilinos/precondition_muelu_smoother.with_64bit_indices=off.output
rename to tests/trilinos/precondition_muelu_smoother.with_trilinos=11.14.with_64bit_indices=off.output