Update wifi connection state when any service state changes

Instead of doing it when the manager state changes, because if wired is
already connected, the manager state will stay "online" and won't change
if a wifi service connects or disconnects

Open-webOS-DCO-1.0-Signed-off-by: Sapna Todwal <sapna.todwal@palm.com>

Change-Id: I25897547101deb9995daea58cb7e86e7ea375a74
Reviewed-on: http://g2g.palm.com/1439
Reviewed-by: Build Verification
Tested-by: Sapna Todwal <sapna.todwal@palm.com>
Reviewed-by: Keith Derrick <keith.derrick@palm.com>