title: Module Tensorflow has no attribute KMeans
body: <p>I'm using Tensorflow for calculating DELF features.
  I'm using next example from tensorflow models:
  <a href="https://github.com/tensorflow/models/blob/master/research/delf/delf/python/detect_to_retrieve/cluster_delf_features.py" rel="nofollow noreferrer">github</a>. </p>
  
  <p>So there is a line here:</p>
  
  <pre><code>kmeans = tf.estimator.experimental.KMeans(...)
  </code></pre>
  
  <p>But I have no such model:</p>
  
  <blockquote>
    <p>AttributeError: module
    'tensorflow_estimator.python.estimator.api.estimator.experimental' has
    no attribute 'KMeans'</p>
  </blockquote>
  
  <p>My configuration:
  tensorboard               1.13.1           py37hf484d3e_0<br>
  tensorflow                1.13.1          gpu_py37hc158e3b_0<br>
  tensorflow-base           1.13.1          gpu_py37h8d69cac_0<br>
  tensorflow-estimator      1.13.0                     py_0<br>
  tensorflow-gpu            1.13.1               h0d30ee6_0</p>
  
  <hr>
  
  <p>Looks like this model replaced, but I can't find where.</p>