Add back host_entries management

[mattock]

Right now it is not possible to pass proper hash entries in Kafo wizard if the key is an IP address. In that case Kafo mangles the key by taking the first substring ending to an ".". For example, '10.10.50.1' becomes '10'. This can prevents adding host entries using the Kafo installer as a hash. The workaround might be to take an array of array of strings and convert that to a hash in a Ruby function.

The host entries are needed for two-way TLS communication when DNS entries are not present. This is in particular related to Foreman and Smart Proxy scenarios.