Erasure Coding: INodeFile.dumpTreeRecursively() supports to print striped blocks

  @Override
  public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
      final int snapshotId) {
    super.dumpTreeRecursively(out, prefix, snapshotId);
    out.print(", fileSize=" + computeFileSize(snapshotId));
    // only compare the first block
    out.print(", blocks=");
    out.print(blocks == null || blocks.length == 0? null: blocks[0]);
    // TODO print striped blocks
    out.println();
  }