Fixes #16952: error at installation of openscap plugin

[ncharles]

https://issues.rudder.io/issues/16952

[Normation-Quality-Assistant]

This PR breaks qa-test

-- stdout -- 
Branch 'branches/rudder/6.0' set up to track remote branch 'branches/rudder/6.0' from 'NRM'.
Your branch is up to date with 'NRM/branches/rudder/6.0'.
Already up to date.
Already up to date.
[...]
Running merge tests
 $ cd "/var/lib/jenkins/jobs/merge-accepted-pr/workspace/repos/rudder-plugins" && ./qa-test --merge

-- stderr --
From github.com:ncharles/rudder-plugins
 * [new branch]      bug_16952/error_at_installation_of_openscap_plugin -> bug_16952/error_at_installation_of_openscap_plugin_pr
Switched to branch 'branches/rudder/6.0'
Switched to a new branch '6.0_test'
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-plugins/pull/252 --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/21817/console)

[ncharles]

OK, merging this PR