add option to run any policy file so Ops is not restricted to only list-path-external and list-path-dirplus

Pass the output are to the sbatch via env params.

New eigth parameter for run time of job request.

This allows policy files for any gpfs filesystem to be run by the
run scripts by using a variable for filesystem rather than hard
coding.
Keep default value set to scratch for compatability with existing callers.
Now can include a seventh arg to invoke policy file on any gpfs
filesystem.

The run-mmpol.sh job script makes it easier to call the policy command
in a job and the submit-pol-job makes it easier initial the slurm run.