Introduce ClatCoordinator to replace netd/ClatdController.
This is a startup commit. Starting clatd needs to prepare local
464xlat ipv4 address, local 464xlat ipv6 address, tun interface,
clat read/write sockets. These will be implemented from this
and followup commits. This commit implements that prepare local
464xlat ipv4 address.
Bug: 212345928
Test: flash and boot
Run "atest ClatCoordinatorTest" in a followup commit.
Change-Id: I486db8aef0181ee1aedd7cd7702f95d5a1cef812
The VPN JNI code is moving to the tethering APEX with
ConnectivityService, so it needs to be split out of libandroid_servers.
Also move the service-connectivity.jar build rule to
packages/Connectivity together with the jni build rule.
Bug: 171540887
Test: m, device boots and VPN (L2TP and VpnService) verified working
Change-Id: Ic29096e2280ce928729315f53b2159b620da49d5