blue gene: add script that automate jobs on Cetus

Testing the product on the IBM Blue Gene/Q platform implies the
following steps:

- connect to the platform
- change directory
- pull code for updates
- build product
- write submission program for job
- submit job

The script included in this patch does most of this to automate the
process (avoid errors and don't waste human time).

Link: https://github.com/GeneAssembly/biosal/issues/771
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>