[ops][docs] operations-docs on StoryBoard

Hello, I've started today with a proposal on [1] to add docs for operations on StoryBoard [2].That could be useful to track bugs that people raise while reading the document. Also a rework for parts of the document could be planned in StoryBoard. A reference might be the work on the Contributor Guide which is mostly maintained in [3]. kind regards Frank [1] https://review.openstack.org/#/c/618722/ [2] https://storyboard.openstack.org [3] https://storyboard.openstack.org/#!/project/openstack/contributor-guide