Rudder

We need to take care when updating fileFormat in the multi-site git sync scenario. See also https://www.rudder-project.org/redmine/issues/10899 for other problem related to that scenario.

The problem to take care of is when you have two rudder install: Rudder-dev (version y.a.b) and Rudder-prod (x.c.d), and you sync their git in the way: Rudder-dev ==> Rudder-prod (with an "archive restore" on Rudder2 after each git sync), then that scenario is broken if for version y, fileFormat is greater than in version x because rudder-prod will see a file format that it does not understand and will fail the archive restoration.