The oslopolicy-policy-generator command line tool does not run
currently, throwing a KeyError. This is because a policy enforcer needs
to be added to Neutron for the command to run.
This change is a limited backport of "Convert policy.json into
policy-in-code" [1]. The feature of policy-in-code is not backported;
all that is backported is the changes needed for the
oslopolicy-policy-generator command line tool to function properly,
which were bundled in with the rest of the policy-in-code feature.
For reference, an analogous change was merged in keystone to solve the
same problem [2].
[1] https://review.openstack.org/585037
[2] https://review.openstack.org/530828
Change-Id: I912f23e9c6800b71672507c548cfab3f094de9c7
Closes-Bug: #1817953
(cherry picked from commit 96b0b90b89)