[JENKINS-65398] terminology update in French for controller. (#5499)

* [JENKINS-65398] terminology update in French.

* Update core/report-l10n.rb

* Reverting core/report-l10n.rb, esclave is an actual language

* Update core/src/main/resources/hudson/model/Node/help-numExecutors_fr.html

* Update core/src/main/resources/hudson/model/Slave/help-remoteFS_fr.html

Co-authored-by: Thierry Wasylczenko <twasyl@users.noreply.github.com>

Co-authored-by: aHenryJard <ajard@cloudbees.com>
Co-authored-by: Thierry Wasylczenko <twasyl@users.noreply.github.com>