Fix SBATCH script generator
Fix SBATCH script generator

- Use the right option to specify node count.
- Ensure the workdir is set so -D works.

Change-Id: Ib309790b34a74d1720d9df7d1bbf56293db39b19
Signed-off-by: Brad Geltz <e42f3ad4099980ea02f08e076efbee5cf9d4a803@intel.com>

geopm/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,cmcantalupo/geopm,cmcantalupo/geopm