BugFix: Fix unable to connect to oracle tenant. (#10) #12

Job	Run time
spark-connector-obkv-hbase / Test	7m 21s
spark-connector-oceanbase / Test	8m 32s
e2e-tests (3.2) / Test	9m 49s
e2e-tests (3.1) / Test	9m 43s
e2e-tests (3.3) / Test	11m 25s
e2e-tests (3.4) / Test	9m 48s
e2e-tests-scala-2_11 (2.4.6) / Test	11m 33s
	1h 8m 11s

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