Enforce log hints in neutron.services

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

Validate that hacking rules apply to directories:
    - neutron/services

Change-Id: Ib744b7a94705afbefeb50b5dce933d226831f580
Partial-bug: #1320867
Merge "Enforce log hints in neutron.services"