Revert mCookieTagMap dump in TrafficController

aosp/2167063 moved mCookieTagMap dump from TrafficController to
NetworkStatsService.
But this dump was used from Cts TagSocketTest.
So, this CL re-adds mCookieTagMap dump to TrafficController to avoid
failure of released Cts.
Upcoming CL will update Cts test to check dump both from
TrafficController and NetworkStatsService.
And after the old Cts support period is over, mCookieTagMap dump in
TrafficController can be removed.

Bug: 241787285
Test: atest TagSocketTest TrafficControllerTest
Change-Id: Ie2ef09fa7d91cf96f56c5efcbe9d863dd68a1020
2 files changed