Description of problem:
Likely related to RHBZ #1415005:
Under Content -> Errata -> Apply, there is a drop-down box to select a Lifecycle Environment to easily filter hosts on this page to choose from for applying the selected errata, when changing it to /any/ Lifecycle Environment available in the list, it does not take effect. All hosts are visible in the list.

Version-Release number of selected component (if applicable): 6.2.6

How reproducible: 100%

Steps to Reproduce:
1. Goto Content -> Errata.
2. Click some errata, and click 'Apply'.
3. Click 'Filter by Environment' drop-down box and choose any environment, all hosts are still visible

Actual results:
Drop-down box does not filter content hosts list

Expected results:
Should only see content hosts in selected lifecycle environment.

Additional info:
If you ignore this drop-down box and instead use the filter box, you can instead filter this way successfully (Valid workaround):
lifecycle_envrironment = 'Production'.