ui: make protocol visible during host edit

We would like to see protocol set for a host in edit mode. The protocol
is modifable only when a host is moved to maintanance mode.

Change-Id: Ie9f6dc3f19ca0df0af4d7acdf7228e6e3c31ac61
Signed-off-by: pkliczewski <piotr.kliczewski@gmail.com>
Bug-Url: https://bugzilla.redhat.com/1162229