Stratimikos: use MPI in Amesos adapter test
Created by: ibaned
The Amesos interface to SuperLU_DIST needs to give SuperLU_DIST and MPI_Comm, therefore it needs to be given an Epetra_MpiComm, even on a single rank. Without this commit, Stratimikos+Amesos+SuperLU_DIST testing will always fail with a bad_cast from Epetra_SerialComm to Epetra_MpiComm.
This is leading up to more work I'm doing adding Amesos2 to Stratimikos, will show up in a future PR.
@trilinos/stratimikos