grenade fails setting up horizon with "ImportError: No module named utils" for compressor package

Seen on a stable/liberty change here, so the old side would be setting up kilo:

http://logs.openstack.org/80/256180/1/gate/gate-grenade-dsvm/d1909a9/logs/grenade.sh.txt.gz#_2016-01-07_19_40_08_188

2016-01-07 19:40:08.188 | Traceback (most recent call last):
2016-01-07 19:40:08.188 | File "/opt/stack/old/horizon/manage.py", line 23, in <module>
2016-01-07 19:40:08.188 | execute_from_command_line(sys.argv)
2016-01-07 19:40:08.188 | File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
2016-01-07 19:40:08.188 | utility.execute()
2016-01-07 19:40:08.189 | File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 354, in execute
2016-01-07 19:40:08.189 | django.setup()
2016-01-07 19:40:08.189 | File "/usr/local/lib/python2.7/dist-packages/django/__init__.py", line 21, in setup
2016-01-07 19:40:08.189 | apps.populate(settings.INSTALLED_APPS)
2016-01-07 19:40:08.189 | File "/usr/local/lib/python2.7/dist-packages/django/apps/registry.py", line 108, in populate
2016-01-07 19:40:08.189 | app_config.import_models(all_models)
2016-01-07 19:40:08.189 | File "/usr/local/lib/python2.7/dist-packages/django/apps/config.py", line 202, in import_models
2016-01-07 19:40:08.189 | self.models_module = import_module(models_module_name)
2016-01-07 19:40:08.189 | File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
2016-01-07 19:40:08.196 | __import__(name)
2016-01-07 19:40:08.196 | File "/usr/local/lib/python2.7/dist-packages/compressor/models.py", line 1, in <module>
2016-01-07 19:40:08.196 | from compressor.conf import CompressorConf # noqa
2016-01-07 19:40:08.196 | File "/usr/local/lib/python2.7/dist-packages/compressor/conf.py", line 5, in <module>
2016-01-07 19:40:08.196 | from django.template.utils import InvalidTemplateEngineError
2016-01-07 19:40:08.196 | ImportError: No module named utils

Looks like this is probably due to django_compressor 2.0 released today breaking all branches:

https://pypi.python.org/pypi/django_compressor/2.0