Add the network handle to the NetworkAgentInfo#toString() output.

This will make it possible to find nethandles via, e.g.
 "dumpsys connectivity --short".

Without this, native multinetwork API debugging requires running
"dumpsys connectivity --diag" in order to see the nethandle values.

Bug: 19537384
Change-Id: Icdd2b112523d4ecf88d5339f229e714a56d248f8
1 file changed