Comment 8 for bug 1738372

I was able to duplicate this, it seems like there may be an issue with the heat devstack plugin, when running devstack (stable/ocata) it originally checks out stable/ocata heat, but once it hits the devstack plugin it will checkout master heat, and then hit:

2018-02-04 15:56:12.694 | from heat.policies import actions
2018-02-04 15:56:12.694 | File "/home/stack/heat/heat/policies/actions.py", line 20, in <module>
2018-02-04 15:56:12.694 | policy.DocumentedRuleDefault(
2018-02-04 15:56:12.694 | AttributeError: 'module' object has no attribute 'DocumentedRuleDefault'

https://github.com/openstack/heat/blob/master/heat/policies/actions.py#L20

Looks like the policies modules were added after ocata:

https://github.com/openstack/heat/tree/stable/ocata/heat/policies/actions.py