userportal,webadmin: pass smartcard option also to ActiveX

Since the SPICE ActiveX plugin already supports the smartcard
option, passing this option also to it (the same way as already
done for XPI)

Change-Id: Ib1fc9c237cb29b48b255174c4669974ef56e0f12
Bug-Url: https://bugzilla.redhat.com/953098
Signed-off-by: Tomas Jelinek <tjelinek@redhat.com>