SQOOP-1825: Sqoop2: Handle NULLs for all types in CSV Intermediate Data Format

(Veena Basavaraj via Abraham Elmahrek)
SQOOP-1885: Sqoop2: KafkaConnector pom.xml needs license header

(Abraham Elmahrek via Jarek Jarcec Cecho)
SQOOP-1813: Sqoop2: Add SqoopIDFUtils class and unit tests

(Veena Basavaraj via Abraham Elmahrek)