Limit test_udfs to always run with a single exec_option test vector
Limit test_udfs to always run with a single exec_option test vector

Change-Id: If3ff1f5f17a95cce88282f9dc165fe5ce85200b9
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1781
Reviewed-by: Alex Behm <fe1626037acfc2dc542d2aa723a6d14f2464a20c@cloudera.com>
Tested-by: jenkins
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1811
Reviewed-by: Lenni Kuff <724b7df200764f5dc1b723c05ee6c6adabd11bb1@cloudera.com>

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