Hammer CLI

Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1438376

Business requirements:
Customer uses a lot of parents for their locations, but these are not showed when using hammer, resulting in a list that isn't usable.
Since you have to specify the location when you deploy a host it would be nice to see the full-name including parents.

Technical requirements:
Have a location named A and create a location named B, for which A is a parent and location C for which B is a parent.
"hammer location list" lists locations as "A", "B" and "C", customer would like to have an option lo list full names of location, in this case "A", "A/B" and "A/B/C", the same way as it is done in WebUI location list.