Updates the imports for the dags and operators to support both "as
deployed" and "as tested" package configurations. This allows for a
simple test to be added that at least imorts and checks the dags to
ensure they contain steps.
A future refactor may eliminate the need for some/much of this by moving the
operators away from the plugin appraoch such that they can be statically
built into the airflow pod and used like a third party library instead
of being appended to the airflow plugins. For now though, this maintains
the status quo for the way these are used in a deployed way.
Change-Id: I437ff9c583358188e27de0e2f6987c38ca85ab2f
038f958501