frontend: SPICE ActiveX plugin IE 11 workaround

Currently SPICE ActiveX plugin cannot handle embedding into DOM without
<PARAM NAME="SecurePort" VALUE="0"/> element inside <object ...>
element. This patch adds this dummy <PARAM .../> element.

Change-Id: Ibb63ac7c0dcd269de33ced50da215e86072476cc
Signed-off-by: Frantisek Kobzik <fkobzik@redhat.com>
Bug-Url: https://bugzilla.redhat.com/1052873