Pull client out of the DataPipeline class
Pull client out of the DataPipeline class

If client is part of the class definition, them we will try to create the client on import
which fails if AWS_REGION is not set.

harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl