BugFix: Fix unable to connect to oracle tenant. #5

Job	Run time
spark-connector-oceanbase / Test	4m 19s
spark-connector-oceanbase / Test	4m 19s
e2e-tests (3.2) / Test	6m 36s
e2e-tests (3.2) / Test	6m 36s
e2e-tests (3.1) / Test	9m 7s
e2e-tests (3.1) / Test	9m 7s
e2e-tests (3.3) / Test	6m 38s
e2e-tests (3.3) / Test	6m 38s
e2e-tests (3.4) / Test	6m 48s
e2e-tests (3.4) / Test	6m 48s
e2e-tests-scala-2_11 (2.4.6) / Test	8m 10s
e2e-tests-scala-2_11 (2.4.6) / Test	8m 10s
	1h 23m 16s

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