Respect init/release methods in Car Service

Some services have internal threads to handle events,
these threads must respect init/release calls, otherwise
we are running out of threads when car service test runs

Test: runtest -x packages/services/Car/tests/carservice_test/

Change-Id: I58b63f98b09c57f742bd9a4ceef6d77b87d9aaa1
Fix: b/36514170
2 files changed