Implement exit codes in LSF driver

[JHolba]

Add exit codes from LSF to LSF driver.

bhist or bjobs should contain the exit code we need. PBS driver already does this properly. https://www.ibm.com/docs/da/spectrum-lsf/10.1.0?topic=logging-lsf-job-exit-codes

Consider adding termination reason as well. https://www.ibm.com/docs/da/spectrum-lsf/10.1.0?topic=logging-lsf-job-termination-reason