Send "getstatus" notifications for wired technology's connected status change

:Release Notes:
Send "getstatus" notifications to its callers if the "Connected" property
for the wired technology changes.

:Detailed Notes:
If the ethernet cable is pulled, the "Connected" property for the wired
technology changes to FALSE, so its important to register it and send the
"com.palm.connectionmanager/getstatus" notification to its callers so that
they can update their states correctly. Its especially crucial for clients like
settings app which need to always report the latest network status.

:Testing performed:
Ethernet cable was unplugged/plugged multiple times and everytime the
"com.palm.connectionmanager/getstatus" notification was seen on luna bus.
This was confirmed by running ls-monitor.

:Issues addressed:
[GF-10373] Callers of getstatus API are not being notified when wired
           connection state changes

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

Change-Id: I11ecf779d7e33706f53a76d23c373e3d9750787c
Reviewed-on: https://g2g.palm.com/2914
Reviewed-by: Sapna Todwal <sapna.todwal@lge.com>
Tested-by: Sapna Todwal <sapna.todwal@lge.com>