message: Fix namespace importer
  Summary: as summary
  Test Plan: none
  Reviewers: georgep, jakeh
diff: @@ -22,11 +22,12 @@ from __future__ import division
  from __future__ import print_function
  # pylint: disable=wildcard-import,unused-import
  +from tensorflow.contrib.ipu.python import autoshard
  from tensorflow.contrib.ipu.python import autoshard_cnn
  from tensorflow.contrib.ipu.python import ipu_compiler
  from tensorflow.contrib.ipu.python import ipu_infeed_queue
  -from tensorflow.contrib.ipu.python import ipu_outfeed_queue
  from tensorflow.contrib.ipu.python import ipu_optimizer
  +from tensorflow.contrib.ipu.python import ipu_outfeed_queue
  from tensorflow.contrib.ipu.python import loops
  from tensorflow.contrib.ipu.python import ops
  from tensorflow.contrib.ipu.python import popnn_normalization
  