Updated openstack/openstack
Project: openstack/keystone  2e246605099abc385f8fd7d276125bf2f4e43bce
null
Move filter_limit_query out of sql.Base

With the change to use oslo's db.sqlalchemy.sessions, the
sql.Base class isn't doing enough to justify its continued
existence.

This change is moving the filter_limit_query and related internal
members out of sql.Base to regular functions in the sql module.

Part of bp use-common-oslo-db-code

Change-Id: Ia4f05e5a81ded7e3543e16ecf93260680351f1e4