[Sahara] style the template parameter configuration filter

Create Cluster Template's parameter tabs  have a filter field
that allows you to filter on the configuration options.
This should have the Bootstrap 3 styling like the other filter
fields in Horizon.

Change-Id: Iac3e53b8e3b33b7b6783a601468cc4f2b3f694b9
Closes-Bug: #1380825
Merge "[Sahara] style the template parameter configuration filter"