Revert bpf map status dump in TrafficController

status dump was removed in aosp/2167962 and aosp/2165825.
But TrafficController still open these maps in init and hold them, so
dump should show the status of them.

Bug: 217624062
Bug: 241787285
Test: atest TrafficControllerTest, dumpsys connectivityservice
trafficcontroller

Change-Id: Icc1f255a619b22174abb2a7d323b7e3c4d42909f
1 file changed