Examples and Tests for Sqoop Execution

1) Included examples for both Sqoop Export and Import with Execution
2) Added tests for the examples
3) Added tests for the SqoopExecution trait especially for the failure scenarios
@mnikliborc when you say Parlour API only accepts ParlourDsl I can still use the ParlourDsl to set arbitrary sqoop options that we haven't explicitly catered for correct?