neutron-lib Style Commandments

Step 1: Read the OpenStack Style Commandments https://docs.openstack.org/hacking/latest/
Step 2: Read on

Neutron Library Specific Commandments

[N521] Validate that jsonutils module is used instead of json
[N529] Method's default argument shouldn't be mutable
[N530] No importing of neutron; should be ignored in neutron itself
[N532] Validate that LOG.warning is used instead of LOG.warn. The latter is deprecated.
[N534] Exception messages should be translated
[N535] Usage of Python eventlet module not allowed
[N536] DEPRECATED: Use assertIsNone/assertIsNotNone rather than assertEqual/assertIs to check None values.
[N537] Don't translate logs.