userportal: changed Spice to SPICE

Removed the hardcoded Spice string from ConsoleProtocol.

Change-Id: I7e610d12a2966ccff81e722d41c3bcde4c6a4be7
Bug-Url: https://bugzilla.redhat.com/876900
Signed-off-by: Tomas Jelinek <tjelinek@redhat.com>