Add "setstate" method for com.palm.connectionmanager

This method should allow user to enable/disable both wifi and wired
technologies, so its actually replicating "com.palm.wifi/setstate" method
for wifi technology

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

Change-Id: Ic94db544e776efe10b0a2eae10400882d32a6892
Reviewed-on: http://g2g.palm.com/1217
Reviewed-by: Build Verification
Tested-by: Sapna Todwal <sapna.todwal@palm.com>
Reviewed-by: Keith Derrick <keith.derrick@palm.com>