Enforce log hints in neutron.plugins.hyperv

This change enforces log hints use and removes debug level log
translation, modifications are validated through a hacking rule and
the change respects loggging guidelines.

Validate that hacking rules apply to directories:
    - neutron/plugins/hyperv

Change-Id: Iea2d63a4e74bf824ee308057570c980c50e937bc
Partial-bug: #1320867
Merge "Enforce log hints in neutron.plugins.hyperv"