sacado: fix test concurrency

diff --git a/tests/sacado/helper_scalar_coupled_3_components_01_1.output b/tests/sacado/helper_scalar_coupled_3_components_01_1.with_mpi=true.mpirun=1.output
similarity index 100%
rename from tests/sacado/helper_scalar_coupled_3_components_01_1.output
rename to tests/sacado/helper_scalar_coupled_3_components_01_1.with_mpi=true.mpirun=1.output

diff --git a/tests/sacado/helper_scalar_coupled_3_components_01_2.output b/tests/sacado/helper_scalar_coupled_3_components_01_2.with_mpi=true.mpirun=1.output
similarity index 100%
rename from tests/sacado/helper_scalar_coupled_3_components_01_2.output
rename to tests/sacado/helper_scalar_coupled_3_components_01_2.with_mpi=true.mpirun=1.output