Fixes #3860 - automated discovery provisioning

Replaces https://github.com/theforeman/foreman_discovery/pull/97
> Why are there two scoped_search components? Where is the other one coming from?

I have mine that is used for the rules themselves.

But then there is the standard search. And since the edit form is
in-line (pop up) one, the original is still visible and kills mine.

To me it looked like it is not necessary to have searching capabilities
for rules, so its a non-issue.

-- 
Later,
 Lukas #lzap Zapletal