IMPALA-943: removed database udf_test from front-end tests

Added CATCH section to test files.

Change-Id: I28ba3a6e5ae4c53df5b86505573793d7b150863b
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2782
Reviewed-by: Victor Bittorf <victor.bittorf@cloudera.com>
Tested-by: jenkins