Description of problem:
  "/bkr" prefix is missing from the pool URL in system page

Version-Release number of selected component (if applicable):
  beaker-server-22.3-1.el6eng.noarch
  (*) Just that I noticed the problem with this release.
      The problem could have been there since older versions.

How reproducible:
  Always

Steps to Reproduce:
  1. Visit system page of the system that belongs to pool(s)
  2. Choose "Pools" tab
  3. Check the link attached to the pool name listed in
     "The system is in the following pools:" area.

Expected results:
  The link should point to:
    /bkr/pools/<pool name>
  When clicking the link, the browser should show the pool page.

Actual results:
  The link points to:
    /pools/<pool name>
  When clicking the link, the browser gets "404 Not Found".