[frontend] Add Client IP to VM session tab

As per request we're now showing the Client IP in the session tab to
indicate the IP of a currently connected user.

Change-Id: I021ed69b99cf9d474a1f4d23e83dd12b5e1cf701
Bug-Url: https://bugzilla.redhat.com/1016844
Signed-off-by: Vinzenz Feenstra <vfeenstr@redhat.com>