Relocate service library tests and hookup a working status file

runtime/observatory/test/vm_test.dart

-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-// VMOptions=--compile-all --error_on_bad_type --error_on_bad_override --checked
-
-import 'package:observatory/service_io.dart';
-import 'package:unittest/unittest.dart';
-import 'test_helper.dart';
-
-var tests = [
-
-(Isolate isolate) {
-  VM vm = isolate.owner;
-  expect(vm.targetCPU, isNotNull);
-  expect(vm.architectureBits == 32 ||
-         vm.architectureBits == 64, isTrue);
-},
-
-];
-
-main(args) => runIsolateTests(args, tests);