[8.0] Correctly collect platform list from queues

[sfayer]

Hi,

I think the platform matching logic in the 8.0 site director isn't quite right: The self.platforms list is initialised in the queue loop, so it only ever gets set to the platform of the last queue considered. This patch moves it out of the loop so that all of the platforms for all queues supporting the VO are collected.

(Please can you add a no sweep label to this: I think the 9.0 sitedirector has had all of the platform code removed?)

Regards,
Simon

BEGINRELEASENOTES
*WorkloadManagementSystem
FIX: Correctly collect platform list from queues
ENDRELEASENOTES

[aldbr]

Looks good to me!

[DIRACGridBot]

Sweep summary

Sweep ran in https://github.com/DIRACGrid/DIRAC/actions/runs/7539781918

Failed:

• integration
  cherry-pick f47c2b9 into integration failed
  check merge conflicts on a local copy of this repository

  git fetch upstream
  git checkout upstream/integration -b cherry-pick-2-f47c2b969-integration
  git cherry-pick -x -m 1 f47c2b969
  # Fix the conflicts
  git cherry-pick --continue
  git commit --amend -m 'sweep: #7394 Correctly collect platform list from queues' --author='Simon Fayer <sf105@ic.ac.uk>'
  git push -u origin cherry-pick-2-f47c2b969-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] Correctly collect platform list from queues' \
       --body 'Sweep #7394 `Correctly collect platform list from queues` to `integration`.
  
  Adding original author @sfayer as watcher.
  
  BEGINRELEASENOTES
  *WorkloadManagementSystem
  FIX: Correctly collect platform list from queues
  ENDRELEASENOTES
  Closes #7395'