Do iWorkflow work with OpenStack? and How?

iWorkflow will allow you to publish iApps via Service Catalogs that you can call via the REST API to deploy "things" wo your BigIP devices. Openstack can be setup to call those Service Catalogs to automate deployment of your BigIP services.

Unfortunately, that's about as helpful as it gets. Help getting those parts and pieces setup usually gets sent to a VAR or F5 Pro Services, unless you have the skillset in-house to develop.