Add support for fdsan to the builtin SocketImpls.

Tag PlainSocketImpl and AbstractPlainDatagramSocketImpl's file
descriptors with fdsan ownership information. This adds fdsan support
to Socket, DatagramSocket, ServerSocket, and any derived classes that
don't implement their own SocketImpls.

Test: art/tools/run-libcore-tests.sh
Change-Id: I01dbcdc9bcd4529cd71470f6c0a94fccafa16cfc