Updated openstack/openstack
Project: openstack/requirements  97620646d6888669c6deffa61ac05dc5ee3644f6
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Add django-bootstrap-form to requirements

This is required by bootstrap 3 update patch in openstack/horizon
https://blueprints.launchpad.net/horizon/+spec/bootstrap-update

Change-Id: I9749607ed808688af2ba3b021738420385062667