rehash overrides ssh/config and ssh/known_hosts files

[endorama]

When rehashing the mentioned files are always emptied (as overwritten with an empty content).

[endorama]

os.Create truncates file when already present. I suspect this is the issue, as those files should be created during setup and not touched afterwards.

I'm thinking of refactoring how the setup works: instead of directly performing actions affecting the fs, return some structure like plugin.Generated (should support folders too) and let the plugin manager handle that.