Add PFLOTRAN test.

Change-Id: Id8087e241d4df19df4f1a91a3127e7aa103bdd33
Merge branch 'pflotran_timeseries' into 13902_visit_lammps_dump_crashes

Change-Id: If958a14b7959c3df673750f1e01d1ba12837ccaf
Merge topic '13902_visit_lammps_dump_crashes' into next

7ae35a9 Merge branch 'pflotran_timeseries' into 13902_visit_lammps_dump_crashes
6d573bd Add PFLOTRAN test.