There are a couple of issues. NetworkInfoDataItemBase
objects might be from OsAgent or GnssLocationProvider.
The two sources actually have mTypes defined differently.
In addtion, when there are different types of connections
such as wifi / mobile, getting connected / disconnected
independently, clients need to be all notified correctly.
Right now, if mConnected hasn't changed, no updates are
send. For exmple, if mobile is connected, later wifi
gets connected too, clients won't know.
SystemStatus is also updated to get updated / colated
informtion. In the above example, SystemStatus's top
record would record as both mobile and wifi are connected.
Change-Id: I1825902247fe1d4e6363f5e24a75be7e984d0dc4
CRs-Fixed: 2221114
533f43e690