engine: Fix for BZ#967890 - enhance logging of JndiAction level in dEBUG mode

Enhanced logging possibility for JndiAction class in debug mode.
This enables user to view more detailed info on what query path, URI and user
was used to perform the authentication and ticket creation.

Change-Id: I84525767c98eda9eba522dc5518c02c10c55fbfa
Bug-Url: https://bugzilla.redhat.com/967890
Signed-off-by: Tomas Dosek <tdosek@redhat.com>