Updated ship_udf() to use ImpalaContext etc.
Updated ship_udf() to use ImpalaContext etc.

wesm/impyla,mariusvniekerk/impyla,laserson/impyla,bhtucker/impyla,schaffino/impyla,cloudera/impyla,bhtucker/impyla,bhtucker/impyla,mariusvniekerk/impyla,cloudera/impyla,wesm/impyla,mariusvniekerk/impyla,schaffino/impyla,laserson/impyla