Set keystone http scheme correctly

When the management and public network ranges differ the http scheme in
the dashboard config file for keystone omit the http or https portion of
the config option.  This sets it.

Resolves rcbops/chef-cookbooks/Issue#753
Merge pull request #149 from rackerjoe/v4.2.2rc

Merged automatically by jenkins after successful build test
allow enabling of load balancer in UI
Merge pull request #150 from rackerjoe/v4.2.2rc

Merged automatically by jenkins after successful build test