* Made preview and announcements configurable through environment variables

Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Fixed deprecation warnings in tests

Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Replaced backward compatibility for entrypoint config

Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Added deprecation warnings for entrypoint config

Signed-off-by: Josh Howard <joshthoward@gmail.com>

Co-authored-by: Josh Howard <josh.t.howard@ey.com>