Updated openstack/openstack
Project: openstack/requirements  fe1293e9e2553167a81fa0a5f50b5c60c86ebb20

Bump the minimum required version of retrying

oslo.concurrency master actually uses one of 1.2.3 features
(custom stop functions).

Change-Id: Ieb1539ca4efaf1e95e1eb1462f801228f7750490