Openstack instance reconfigure pointers

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Hey,

I've been asked to look at using ansible to reconfigure openstack instance, eg add disks or change flavour (resize cpu/ram). Has anyone done something similar? 

looking at the docs http://docs.ansible.com/ansible/latest/list_of_cloud_modules.html It looks like disks are covered via os_volume & os_server_volume? Havent seen anything for change the flaour of the instance?

Thanks