Ert JobQueue Lsf Driver not working with LSF_RESOURCE option in example

[jonathan-eq]

Describe the bug When using the old C lsf driver with the LSF_RESOURCE option provided in ert documentation, it fails on bsub

Traceback (most recent call last):
  File "/opt/rh/rh-python38/root/usr/lib64/python3.8/threading.py", line 1388, in _shutdown
    lock.acquire()
  File "/private/jonak/Documents/ert/src/ert/services/_base_service.py", line 48, in cleanup_service_files
    raise OSError(f"Signal {signum} received.")
OSError: Signal 2 received.
Failed to get lsf job id from file: /tmp/enkf-submit-eEJoJs
bsub command                      : bsub
Error in rusage section. Job not submitted.

The option in question:

QUEUE_SYSTEM LSF
QUEUE_OPTION LSF LSF_RESOURCE rusage[mem=512MB:swp=1GB]

To reproduce Steps to reproduce the behaviour:

1. ``
2. ert gui my_config.ert
3. Run experiment (IES/Smoother/ESMDA/Test)
4. Ert fails on submit.

Expected behaviour Submit works with bsub -

Screenshots If applicable, add screenshots to help explain your problem.

Environment

• OS: [e.g. RHEL7]
• ERT/Komodo release: [e.g. 2.18 or 2020.12.00]
• Python version py3.8
• Remote/HPC execution involved: Yes

Additional context Add any other context about the problem here.