message: [hdfs] register viewfs and har schemes
diff: @@ -18,7 +18,7 @@ limitations under the License.
  void TF_InitPlugin(TF_FilesystemPluginInfo* info) {
  info->plugin_memory_allocate = tensorflow::io::plugin_memory_allocate;
  info->plugin_memory_free = tensorflow::io::plugin_memory_free;
  - info->num_schemes = 4;
  + info->num_schemes = 6;
  info->ops = static_cast<TF_FilesystemPluginOps*>(
  tensorflow::io::plugin_memory_allocate(info->num_schemes *
  sizeof(info->ops[0])));
  @@ -26,4 +26,6 @@ void TF_InitPlugin(TF_FilesystemPluginInfo* info) {
  tensorflow::io::http::ProvideFilesystemSupportFor(&info->ops[1], "http");
  tensorflow::io::s3::ProvideFilesystemSupportFor(&info->ops[2], "s3e");
  tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[3], "hdfse");
  + tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[4], "viewfse");
  + tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[5], "hare");
  }
  