http mock module

   @ConfiguresHttpCommandExecutorService
   @ConfiguresExecutorService
   public static class MockModule extends AbstractModule {
      private final TransformingHttpCommandExecutorService mock;

      public MockModule() {
         this(createMock(TransformingHttpCommandExecutorService.class));
      }

      public MockModule(TransformingHttpCommandExecutorService mock) {
         this.mock = mock;
      }

      @Override
      protected void configure() {
         install(new ExecutorServiceModule(sameThreadExecutor(), sameThreadExecutor()));
         bind(TransformingHttpCommandExecutorService.class).toInstance(mock);
      }
   }