Update GRANT/REVOKE test to cleanup all created objects during test cleanup
Update GRANT/REVOKE test to cleanup all created objects during test cleanup

The tests now cleanup everything in the test cleanup routine. This fixes a flakiness
issue when loading from a snapshot. The problem was that one of the test table's HDFS
path contained old test data since the table wasn't dropped at the end of the test.

Change-Id: Idf50011b0b4ae69e724723c2cede94c9b45d0179
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4520
Reviewed-by: Lenni Kuff <724b7df200764f5dc1b723c05ee6c6adabd11bb1@cloudera.com>
Tested-by: jenkins

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