Java 8 Improvement: replace anonymous type with lambda in alluxio.master.lineage.LineageMasterClientRestServiceHandler#reportLostFile

[xiaole-max]

change

    return RestUtils.call(new RestUtils.RestCallable<Void>() {
      @Override
      public Void call() throws Exception {
        Preconditions.checkNotNull(path, "required 'path' parameter is missing");
        mLineageMaster.reportLostFile(path);
        return null;
      }
    });

to

    return RestUtils.call((RestUtils.RestCallable<Void>) () -> {
      Preconditions.checkNotNull(path, "required 'path' parameter is missing");
      mLineageMaster.reportLostFile(path);
      return null;
    });