Add a temporary hack to CS to report netbpfload result

Since BpfHandler::init() in the August module does not wait on
netbpfload (it only loads test.o), post on the ConnectivityService
handler and check that netbpfload ran to completion after 30s.

Log.wtf() on failure as these logs show up in Pitot even on release
builds.

Note that system server does not have access to any of the programs or
maps loaded from test.c, so all it can do is verify that mainline_done
exists.

Test: cuttlefish boots and does not crash
Change-Id: I6d2063f1d4f03207bbb6599b75954cfceb793af4
1 file changed