Rationalization of config files?

[fulmicoton]

Right now, we have config files as serialized inthe Indexmetadata and iconfig files as filled by the user.

This is a choice that was probably made to offer us more flexibility in the user experience (e.g. embed sources in the index config). Unfortunatley this has a cost.

We do not handle the versioning of the latter for instnace. A lot of the code is deduplicated.

It will also prevent us from embracing a GET/PUT resource config model a-la k8s.

@fmassot @guilload need your opinnion on that one.