Removes flake8 ignored errors
Removes flake8 ignored errors

These errors shouldn't be ignored. They ensure higher code quality.

Change-Id: I55ec3794a0bbaa98a963f4782e86c21aa1ddd49f

cloudbase/networking-hyperv,openstack/networking-hyperv,stackforge/networking-hyperv,gabriel-samfira/networking-hyperv,openstack/networking-hyperv