Hammer CLI

Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1246989

Description of problem:
There are possibly duplicate options "--root-pass" and "--root-password" in `hammer host create`. Their "--help" message do not explain whay there should be two of them.

Version-Release number of selected component (if applicable):
mmer-cli-foreman 0.9.0

Steps to Reproduce:
1. # hammer host create --help | grep -- "--root"

Actual results:
There are two options for one password (or if these options differ, docs is not sufficient):
--root-pass ROOT_PASS required if host is managed and value is not inherited from host group or
--root-password ROOT_PW

Expected results:
There should be only one option for one password.