core : JBoss Servlet Exception at Page Loads :: no protocol: /ovirt/reports-interface

When reports server is not installed and the
reports base url is empty the redirect url
does not have a protocal associated with it.
So the url "/ovirt/reports-interface" throws an
exception in server logs

Change-Id: I485dff572fe8ce1ffb61d77b5032b540735f93f2
Bug-Url: https://bugzilla.redhat.com/1142748
Signed-off-by: Ravi Nori <rnori@redhat.com>