Updated openstack/openstack
Project: openstack/oslo.db  3cb592775d063df9afdb65e0d59338b31363d089

Adds empty line to multilines docs to pass H405

Adds empty line to multilines docs to pass H405 check.
Removes H405 from ignore setting in tox.ini.

Change-Id: I0516fb12765bf961a4488570a6c73b80f667d972