[CORE] [TEST] Fix SimpleDateParamTest

```
sbt.ForkMain$ForkError: 1424424077190 was not equal to 1424474477190
	at org.scalatest.MatchersHelper$.newTestFailedException(MatchersHelper.scala:160)
	at org.scalatest.Matchers$ShouldMethodHelper$.shouldMatcher(Matchers.scala:6231)
	at org.scalatest.Matchers$AnyShouldWrapper.should(Matchers.scala:6265)
	at org.apache.spark.status.api.v1.SimpleDateParamTest$$anonfun$1.apply$mcV$sp(SimpleDateParamTest.scala:25)
	at org.apache.spark.status.api.v1.SimpleDateParamTest$$anonfun$1.apply(SimpleDateParamTest.scala:23)
	at org.apache.spark.status.api.v1.SimpleDateParamTest$$anonfun$1.apply(SimpleDateParamTest.scala:23)
	at org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22)
	at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
	at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
	at org.scalatest.Transformer.apply(Transformer.scala:22)
	at org.scalatest.Transformer.apply(Transformer.scala:20)
	at org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:166)
	at org.scalatest.Suite$class.withFixture(Suite.scala:
```

Set timezone to fix SimpleDateParamTest

Author: scwf <wangfei1@huawei.com>
Author: Fei Wang <wangfei1@huawei.com>

Closes #6377 from scwf/fix-SimpleDateParamTest and squashes the following commits:

b8df1e5 [Fei Wang] Update SimpleDateParamSuite.scala
8bb74f0 [scwf] fix SimpleDateParamSuite