prepare for v1.5 (#97) #262

Job	Run time
spark-connector-oceanbase / Test	9m 24s
spark-connector-obkv-hbase / Test	7m 9s
e2e-tests (3.4.4) / Test	11m 21s
e2e-tests-scala-2_13 (3.5.5) / Test	5m 10s
e2e-tests (v3.2.4) / Test	10m 50s
e2e-tests (v3.1.3) / Test	9m 58s
e2e-tests-scala-2_11 (2.4.6) / Test	4m 52s
e2e-tests (3.5.5) / Test	10m 15s
e2e-tests (3.3.3) / Test	10m 44s
	1h 19m 43s

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