Rudder

We have a case where technique library may not be correctly reloaded if a git commit happened when rudder was stopped.

In that case, we can have the "reload technique lib", which update the current commit known by rudder, that happens before the callback that updates LDAP is registered.
We miss the callback, and then the lib seems to be up to date, but it is not.

Workaround: make a trivial change in all technques that were modified while rudder was stopped, commit, reload technique library.

Dev info: the problem is that `TechniqueAcceptationUpdater` is registered far away from the initialisation of the technique repository, and the git commit (provided by GitTechniqueVersionProvider) is already read and updated by that time. TechniqueRepository tells to noone "this is all the changes".