I wonder why the template "kickstart_networking_setup" which is used for
iface configuration is not Locked. I mean, how are we supposed to do
upgrades when customer make a change for that template? Do we ignore the
new version? Do we overwrite customers changes?

I think the best way should be to follow the same pattern Anaconda
Kickstarts or even Bootdisk have. The template should be Locked
(read-only) and there should be a global setting allowing the user to
point Satellite 6 on his own copy.

After the upgrade we can simple ask the customers in the Upgrade notes
to modify their own copy according the new version. We can even enforce
this easily putting a version number in the template and if that does
not match expected version, we can thrown an error forcing user to
increase this number in his copy manually to get his attention.

This BZ is an attempt for a blocker bug fort 6.1 GA to make the template Locked and to introduce new Setting with name of the template to use when provisioning, so users can override it when needed.