[SPARK-3806][SQL]Minor fix for CliSuite

To fix two issues in CliSuite
1 CliSuite throw IndexOutOfBoundsException:
Exception in thread "Thread-6" java.lang.IndexOutOfBoundsException: 6
	at scala.collection.mutable.ResizableArray$class.apply(ResizableArray.scala:43)
	at scala.collection.mutable.ArrayBuffer.apply(ArrayBuffer.scala:47)
	at org.apache.spark.sql.hive.thriftserver.CliSuite.org$apache$spark$sql$hive$thriftserver$CliSuite$$captureOutput$1(CliSuite.scala:67)
	at org.apache.spark.sql.hive.thriftserver.CliSuite$$anonfun$4.apply(CliSuite.scala:78)
	at org.apache.spark.sql.hive.thriftserver.CliSuite$$anonfun$4.apply(CliSuite.scala:78)
	at scala.sys.process.ProcessLogger$$anon$1.out(ProcessLogger.scala:96)
	at scala.sys.process.BasicIO$$anonfun$processOutFully$1.apply(BasicIO.scala:135)
	at scala.sys.process.BasicIO$$anonfun$processOutFully$1.apply(BasicIO.scala:135)
	at scala.sys.process.BasicIO$.readFully$1(BasicIO.scala:175)
	at scala.sys.process.BasicIO$.processLinesFully(BasicIO.scala:179)
	at scala.sys.process.BasicIO$$anonfun$processFully$1.apply(BasicIO.scala:164)
	at scala.sys.process.BasicIO$$anonfun$processFully$1.apply(BasicIO.scala:162)
	at scala.sys.process.ProcessBuilderImpl$Simple$$anonfun$3.apply$mcV$sp(ProcessBuilderImpl.scala:73)
	at scala.sys.process.ProcessImpl$Spawn$$anon$1.run(ProcessImpl.scala:22)

Actually, it is the Mutil-Threads lead to this problem.

2 Using ```line.startsWith``` instead ```line.contains``` to assert expected answer. This is a tiny bug in CliSuite, for test case "Simple commands", there is a expected answers "5", if we use ```contains``` that means output like "14/10/06 11:```5```4:36 INFO CliDriver: Time taken: 1.078 seconds" or "14/10/06 11:54:36 INFO StatsReportListener: 	0%	```5```%	10%	25%	50%	75%	90%	95%	100%" will make the assert true.