cmsdk: Use intent extradata for WiFi triggers

Use the extras of the intent to determine if we are connected to a
WiFi network and, in case we are, to get the SSID. This allows to
trigger profile changes only when the status is either DISCONNECTED
or CONNECTED and it also ensures that we process each event according
to the network status that caused it rather than the current one.

Change-Id: If7598bc9502f94bb2f6f7f274538df346fbb4869