* mock is now part of the Python standard library,
available as unittest.mock in Python 3.3 onwards.
https://pypi.org/project/mock/
Change-Id: Id5a5d4a5020821def08a3cbf2a6d528d43c4d48c
This will help us when jumping to Django 2+
> RemovedInDjango20Warning: Importing from django.core.urlresolvers is deprecated in favor of django.urls.
Change-Id: I13c3e1e8aea93aa48d1f7997eb6daae3b7dcfecc
* we need to use reference ( docker API it doesn't support tag name )
* fix tag date (value in the first occurrence not last)
Change-Id: I2fa2f7bedaca4cdeeb3a3a2d4a3f4a661d15fad1