Description of problem:

This is sort of a small detail, but it is polish.

If a user has environments across multiple promotion paths defined in katello and then attempts to create a system, there is no delineation separating the separate paths.

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


How reproducible:


Steps to Reproduce:
1. In katello, ACME_Corporation, create environment "hello" with a prior environment of "Library"
2. Create environment "goodbye", with a prior environment of "hello"
3. Create an environment "buongiorno" with a prior prior environment of "Library"
4. Create an environment "mi scusi" with a prior environment of "buongiorno"
5. Observe in the katello UI that these are, indeed, two separate promotion paths.
6. Go to foreman Hosts > New Host; attempt to select an Environment ID from the dropdown; view results
  
Actual results:
There is no delineation or separation of the two promotional paths.

Expected results:
A line or something which indicates the environments are for separate paths. 

Additional info: