ERROR:kolla.image.build.kibana:Unknown error when pushing
Traceback (most recent call last):
  File "/usr/lib64/python3.4/site-packages/kolla/image/build.py", line 206, in run
    self.push_image(image)
  File "/usr/lib64/python3.4/site-packages/kolla/image/build.py", line 227, in push_image
    stream = json.loads(response)
  File "/usr/lib64/python3.4/json/__init__.py", line 312, in loads
    s.__class__.__name__))
TypeError: the JSON object must be str, not 'bytes'