Description of problem:
==============================
It seems like our use of terminology on this process is overlapping which makes it confusing.  

I go to a provider and create a new realm which gives me a option to map to a realm or map to a provider.  

In terms of rhevm, I create a new realm and map that to a rhevm cluster which the conductor ui calls a realm.  

Not sure if what is needed is specific terminology based on the provider the realm is for like changing 'add mapping to realm' to 'add mapping to rhevm cluster'.  

Its also not clear when you map to a realm(cluster) or map to a provider and if you need just one or the other or both.