Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1234936
Description of problem:
The error message is not accurate

Version-Release number of selected component (if applicable):

How reproducible:
 Always

Steps to Reproduce:
 1. Go to Configure -> Environments -> New Environment
 2. Enter an invalid name e.g Test Servers
 3.

Actual results:
 Web UI reports "is alphanumeric and cannot contain spaces"

Expected results:
 should say "is alphanumeric or underscored and cannot contain spaces or hyphens"

Additional info:
 Underscores are permitted (and used extensively by Satellite) buy adding this it makes it clearer that hyphens are not permitted