Merge pull request #5047 from RosettaCommons/roccomoretti/database_md5_mpi
Fix database_md5 MPI issue.
My recent changes to the database_md5 test didn't work 100% with the MPI build, as there's some spurious lines which now get printed (and diffed) there.
Move the log files which we don't need to compare to a .ignore file instead.