Add SageMaker Feature Store Spark connector to containers

[tonykchen]

The SageMaker Feature Store Spark connector enables scalable data ingestion into SageMaker Feature Store. In order to use the connector in a SageMaker Processing Job, one must extend a pre-built image with the dependency as shown here.

Including the connector as part of the pre-built images would make it easier to get started with using Spark for ingest.