Fixes #7114: use the correct model for host-collection row select.

The model being used for host-collections collapsed table row
select was incorrect from a bad copy/paste.  This commit fixes the
model being used.

http://projects.theforeman.org/issues/7114
Merge pull request #4587 from waldenraines/7114

Fixes #7114: use the correct model for host-collection row select.