Create stub for build_sphinx

This will allow the docs jobs to pass which allows us to conform to the
OpenStack infra without specialness.

Change-Id: I4c80d71f211ed396cabda82dde088291a4bfe08d
Remove out of date CI docs

This is entirely inaccurate now that we _are_ in fact using the
OpenStack infrastructure for CI.

Change-Id: I334f2e8c3073e72ce42c28542d0fc88d16ca78be
Merge "Create stub for build_sphinx"
Merge "Remove out of date CI docs"