Hammer CLI

Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1242488
Description of problem:
Hammer says "Error: 301 Moved Permanently" when you are missing "https://" in server option. It is not user-friendly and I had to bug developer to find that typo.

Version-Release number of selected component (if applicable):
rubygem-hammer_cli-0.1.4.11-1.el6_6sat.noarch

How reproducible:
always

Steps to Reproduce:
1. hammer --server $(hostname) --username admin --password changeme organization create --label 'satellite-qa' --name 'satellite-qa'

1. hammer --server $(hostname) --username admin --password changeme organization create --label 'satellite-qa' --name 'satellite-qa'
   Could not create the organization:
   Error: 301 Moved Permanently

Expected results:
Some useful error message explaining what is wrong

Additional info:
Running with "https://" is OK:

1. hammer --server https://$(hostname) --username admin --password changeme organization create --label 'satellite-qa' --name 'satellite-qa'
   Organization created