Make the experimental CI upgrade reproducible
Make the experimental CI upgrade reproducible

- it now deploys the latest version of cf-deployment from master as a
clean deployment, runs smoke-tests to confirm that everything is
working, then deploys the latest changes from the develop branch as an
upgrade using uptimer

[#167677101](https://www.pivotaltracker.com/story/show/167677101)

Co-authored-by: Dave Walter <00834c187f77910918b70534e2fb1dd066a04d4b@pivotal.io>

cloudfoundry/cf-deployment,cloudfoundry/cf-deployment