This change includes:
  1. Refactor the logic in Tethering#dump into utils class.
  2. Move the utils class to a common place which could be referenced
     from other sub-modules.
  3. Add @MonitorThreadLeak annotation to enforce
     there is no thread leak problem.

Test: atest FrameworksNetTests NetworkStaticLibTests
Test: atest ConnectivityCoverageTests:com.android.networkstack.tethering.TetheringTest#testDumpTetheringLog
Test: adb shell dumpsys tethering (with hardcoded exception)
Fix: 312669345

Change-Id: Ia6fdfeeec2110afa0ec9e056e9db3843748845c3

Define this flag for guarding UserManager#DISALLOW_THREAD_NETWORK

Bug: 307679182
Change-Id: I69c578d76f3aac250bb733aac74754c127ae453b

This is not required for code in the mainline module since the flag
infra is not supported for mainline. But we will need to write code
in UserManager and it needs to be guarded by new Thread flags.

Note that Merged-In is added to skip merging this CL into the
udc-mainline-prod branch because trunk stable flagging is not supported
there

Bug: 307679182
Test: m
Merged-In: I88c993680976d2e10d672bfdbf45119f2db13868
Change-Id: Id53fa3e7c9592b04f37f4cbd7dcd0499859e59ed

Currently requestThreadNetwork is called in registerThreadNetwork. This creates a new NetworkCallback for Thread every time when Thread is turned on. We'd better just use one callback to avoid potential issues.

Bug: 319179354

Change-Id: I96bad351f089b32a9acd919dea2e2b6b2aea68d2

We need to do initialization work and start OT daemon when
system_server boots. But the initialize() is called at the phase
PHASE_BOOT_COMPLETED which is too late as Apps (e.g. Google Play
Services) can be started before this phase.

This commit changes to start the Thread service earlier at the phase
PHASE_SYSTEM_SERVICES_READY. Other services such as Wi-Fi, Bluetooth,
Ethernet and Nearby all starts / initializes at this phase.

This commit resolves comment aosp/2737373/comment/d65b9446_8a08117c

Bug: 318787467
Test: atest CtsThreadNetworkTestCases
Change-Id: I7b7b8551b9114cbf07f995b64316c7b420d868b6

Address comments from android-api-council review.

Bug: 310992535
Change-Id: I722725bd3d3a3df1687721175e9434efae9da37a
Test: presubmit

The cell network may reconnect on carrier config change, so a cell
network requested before that may be disconnected after the change.

Only request the cell network after the carrier config change, so the
network connected after the change is used for the test.

Bug: 316154796
Test: atest
Change-Id: Id8cd49ae352fd7899cb45efecd5ccfd760a7b1eb

Test: atest CtsThreadNetworkTestCases
Change-Id: Id7c52532988048e4473591092ac60eb66b1b7bcb

* changes:
  Make getProviderIfaceStats return Entry
  Return Entry from TrafficStats JNI

This refactoring makes the method return Entry for follow-up
changes to perform arithmetic operations on them easily.
This change also removes error handling when the type is
unsupported when calling getProviderIfaceStats because it
cannot happen in practice.

Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.server.net.NetworkStatsServiceTest
Bug: N/A
Change-Id: Id26a24c80bb87c399972ef8c3abf16e0f4719cb1

The ThreadPersistentSetting class can be used to read/store key value
pairs in ThreadPersistentSetting.xml file.

Bug: 299243765

Test: atest ThreadNetworkUnitTests:com.android.server.thread.ThreadPersistentSettingTest
Change-Id: I564ce8373e6af8f5cdf066a579bec46bfffecb72

Bug: b/309357909
Test: Run `atest ThreadNetworkUnitTests`.
Change-Id: I51c297a5c30fb114a6e3fb8b54cdbfef142001b3

Adds the Thread service unit test skeleton and make the services
testable.

Initially, a few trivial unit tests for existing APIs are added in
ThreadNetworkControllerServiceTest.java, and more tests will be added in
separate CLs later.

Bug: 317555104
Change-Id: I7b9e5f3663493d8da2448568de792e4272ee1df6

This is no-op refactoring which returns [tx|rx][Bytes|Packets]
to the service instead of passing type to JNI and return only
1 value.
This is needed for the follow-up changes to caching values in
a row in the service side.

This change also remove unused JNI methods.

Test: atest NetworkStackIntegrationTests:android.net.NetworkStatsIntegrationTest
Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.server.net.NetworkStatsServiceTest
Bug: N/A
Change-Id: I3b6ac97e6a1bff49cffe6153ffc2618f37a9deb4

Bug: b/309357909
Test: Run `atest ThreadNetworkUnitTests`.
Change-Id: I087cc0fc2b6c21fd9d3d4607f30c194214aeb37e

This commented out line references the old robolectric ("Robolectric_all-target") which is being replaced by Robolectric_all-target_upstream

Bug: 314757990
Test: none, this is simply removing a commented out dep.
Flag: NA
Change-Id: I25eed6cef457bada06289656745ca5b5286bb467

This CL adds resource overlay support to allow developers to
change the default configuration of using the location country code.

Bug: b/311324956
Test: Set the resource overlay in cuttlefish, check the default
      configuration via the command `dumpsys thread_network`.

Change-Id: Ide853975e8244f06a382b2eda4844e030539b95d

This CL selects the Thread country code from location country code.
If the location country code is not avaliable, the country code `WW`
will be selected as the default Thread country code.

This CL also adds Shell commands for developers to override the Thread
country code for testing.

Bug: b/309357909
Test: Run `atest ThreadNetworkUnitTests`.

Change-Id: Id87c293005f0e75922a72854b40c41837b74397f

Test: TH
Change-Id: Idc661b6a2ca4ca25ea06e30cae87967a37e9c3fc

* changes:
  [Thread] use Context#enforceCallingOrSelfPermission
  [Thread] make InfraInterfaceController mockable

Context#enforceCallingPermission always throws SecurityException if we
are not processing a Binder IPC. This specifically doesn't work with
unit tests where the service APIs are called with mocked Binder
interfaces.

Bug: 317555104
Change-Id: I50be68487fb53907dbb1e3da7815fdf305047481

It's generally discouraged to mock a static method, so this commit
changes InfraInterfaceController#createIcmp6Socket to non-static method
and inject InfraInterfaceController into ThreadNetworkControllerService
as an external dependency.

Bug: 317555104
Change-Id: I6f88c02858279223684c781dc065a9bf84ae15ab

NsdService switched from Netd native solution to Java solution on
Android U. MDNS service provided by Netd will be removed from Android V.

1. Stop registering native mdns service from V.
2. Stop startDaemon() in NsdManager from V.
3. As a double safety, return early in NsdService methods that call the
   native mdns service when platform version is V+.
4. Modify NsdManagerTest to cover V+ behavior.

Bug: 298594687
Test: Build. Presubmit.
Change-Id: Ifdac8f7a44aa57d93d453ba482ec473a2b531452