Fixes #18645: Upgrading 6.2 nightly to 6.2 nightly with plugins fails

[VinceMacBuche]

https://issues.rudder.io/issues/18645

[Normation-Quality-Assistant]

This PR breaks qa-test

-- stdout -- 
Branch 'branches/rudder/6.2' set up to track remote branch 'branches/rudder/6.2' from 'NRM'.
Your branch is up to date with 'NRM/branches/rudder/6.2'.
Already up to date.
Already up to date.
[...]
+ '[' --merge = --relayd ']'
+ '[' --merge = --language ']'
+ '[' --merge = --scala ']'
+ webapp/sources/rudder/rudder-core/src/test/resources/hooks.d/test-hooks.sh
+ export PYTHONPATH=./relay/sources/rudder-pkg/lib/rudder-pkg/:./relay/sources/rudder-pkg/lib:
+ PYTHONPATH=./relay/sources/rudder-pkg/lib/rudder-pkg/:./relay/sources/rudder-pkg/lib:
+ xargs pylint -E --persistent=n --disable=C,R,import-error,no-member,no-name-in-module
+ find . '!' -name convertOpenLDAPSchema.py '!' -wholename '*jsondiff/*' -name '*.py'
No config file found, using default configuration

You should run ./qa-test in your repository to make sure it works.
You can also run rudder-dev merge https://github.com/Normation/rudder/pull/3405 --test to test with upmerging.
After this, you can remove the qa: Can't merge ta
-- Your faithful QA (https://ci.normation.com/jenkins/job/merge-accepted-pr/32975/console)

[VinceMacBuche]

PR updated with a new commit

[Normation-Quality-Assistant]

This PR is not mergeable to upper versions.
Since it is "Ready for merge" you must merge it by yourself using the following command:
rudder-dev merge https://github.com/Normation/rudder/pull/3405
-- Your faithful QA
Kant merge: "Thoughts without content are empty, intuitions without concepts are blind."
(https://ci.normation.com/jenkins/job/merge-accepted-pr/32983/console)

[fanf]

OK, squash merging this PR

[ncharles]

this case breaks the comparision just below