Added info option for jupnp command line tool.
* added info commandline args and command implementation
* added test cases for info command
* refactored test cases (UpnpService can be mocked now)
* refactored out IpAddressUtils
* Fixed remarks from Kai
  * removed TODO, printStackTraces
  * removed not used code
  * changed device ids to use fake numbers

Signed-off-by: Jochen Hiller <jo.hiller@googlemail.com> (github:
@jochenhiller)