According Linux and UNIX file hierarchies:
- /opt can host misc software packages file
- /srv can host shared data
During D2168 I've thought about that and figured we could sort /srv /opt /data mess like this:
- any service data goes to /srv
- any software not packaged goes to /opt
So /opt/salt should become /srv/<something> for example.
/data should migrate to /srv (I think it's already the case for paas docker role)