[MS62.2] Add NetworkStatsService into service initializer

NetworkStatsService is going to be moved into Connectivity mainlne
module and it will be not visible to SystemServiceResistry after
migration done. Thus, register service in
NetworkStatsServiceInitialalizer and register manager in
ConnectivityFrameworkInitializerTiramisu instead.

Ignore-AOSP-First: Avoiding conflicts; cherry-pick will follow
Test: FrameworksNetTests
      CtsNetTestCases
Bug: 204830222
Change-Id: I03d947cc54dd995f6b5b4544ee3bf03cf029d143
1 file changed