Updated openstack/openstack
Project: openstack-dev/devstack  040cd593500705b46d27a4487cb02318c17c99de
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Make MySQL query logging optional

* lib/databases/mysql: Wrap query log configuration in a check for a
ENABLE_QUERY_LOGGING variable.

* stackrc: Add the DATABASE_QUERY_LOGGING variable defaulted to True.

Change-Id: Iddf8538ad0a1e36e2c6944dc70315984026c8245