[8.0] fix: getting batch system info from local cfg

[aldbr]

Aims at solving #7177
Associated with DIRACGrid/Pilot#222

BEGINRELEASENOTES
*Resources
FIX: get batch system details from local cfg instead of environment variables
ENDRELEASENOTES

[fstagni]

Just to be sure: this works also without DIRACGrid/Pilot#222 right? (in the sense that it does not crash)

[aldbr]

Just to be sure: this works also without DIRACGrid/Pilot#222 right? (in the sense that it does not crash)

Now it should work without DIRACGrid/Pilot#222.

[DIRACGridBot]

Sweep summary

Sweep ran in https://github.com/DIRACGrid/DIRAC/actions/runs/7139908581

Failed:

• integration
  cherry-pick 460fa7a into integration failed
  check merge conflicts on a local copy of this repository

  git fetch upstream
  git checkout upstream/integration -b cherry-pick-2-460fa7ad1-integration
  git cherry-pick -x -m 1 460fa7ad1
  # Fix the conflicts
  git cherry-pick --continue
  git commit --amend -m 'sweep: #7289 fix: getting batch system info from local cfg' --author='aldbr <[email protected]>'
  git push -u origin cherry-pick-2-460fa7ad1-integration
  
  # If you have the GitHub CLI installed the PR can be made with
  gh pr create \
       --label 'sweep:from rel-v8r0' \
       --base integration \
       --repo DIRACGrid/DIRAC \
       --title '[sweep:integration] fix: getting batch system info from local cfg' \
       --body 'Sweep #7289 `fix: getting batch system info from local cfg` to `integration`.
  
  Adding original author @aldbr as watcher.
  
  BEGINRELEASENOTES
  *Resources
  FIX: get batch system details from local cfg instead of environment variables
  ENDRELEASENOTES
  Closes #7355'