Description of problem:

Puppet-environment allows creation of names with numeric values, but fails to edit. 

The UI states that "only alhanumeric and no spaces".

tail -f /var/log/foreman/production.log

Processing by EnvironmentsController#edit as */*
  Parameters: {"id"=>"454981231"}
  Rendered common/404.html.erb within layouts/application (1.9ms)
  Rendered layouts/base.html.erb (2.2ms)
Completed 404 Not Found in 46ms (Views: 7.8ms | ActiveRecord: 3.9ms)


Version-Release number of selected component (if applicable):
Sat6-GA-snap3

How reproducible:
when using numeric values for puppet-environment.

Steps to Reproduce:
1.
2.
3.

Actual results:
Fails to edit an puppet-environment when it's a numeric value.

Expected results:
From the UI message it looks like only alphanumeric values are allowed.

Additional info: