Function get_ssl_property needs to be rewritten

Fuel-library function deployment/puppet/osnailyfacter/lib/puppet/parser/functions/get_ssl_property.rb should be rewritten to:

* not use Class inside a function. It should move to explicit module
* not try to be all-in-one function. We need separate function to getting protocol, separate for getting hostname and so on. It will lead to smaller functions that will be easier to read and understand
* remove some unusual notation like !!x==x (need to implement sort of equivalent of is_a?(Boolean ) instead)