[SPARK-22885][ML][TEST] ML test for StructuredStreaming: spark.ml.tuning

[WeichenXu123]

What changes were proposed in this pull request?

ML test for StructuredStreaming: spark.ml.tuning

How was this patch tested?

N/A

[SparkQA]

Test build #86109 has finished for PR 20261 at commit d52b8ca.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[smurakozi]

I think this change is ok.

[jkbradley]

LGTM
Will merge after fresh tests
Thanks @WeichenXu123 and @smurakozi !

[SparkQA]

Test build #4164 has finished for PR 20261 at commit d52b8ca.

• This patch fails from timeout after a configured wait of `250m`.
• This patch does not merge cleanly.
• This patch adds no public classes.

[SparkQA]

Test build #4168 has finished for PR 20261 at commit d52b8ca.

• This patch fails SparkR unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[WeichenXu123]

Jenkins, test this please.

[SparkQA]

Test build #90052 has finished for PR 20261 at commit d52b8ca.

• This patch fails SparkR unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[WeichenXu123]

Jenkins, test this please.

[SparkQA]

Test build #90134 has finished for PR 20261 at commit d52b8ca.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[jkbradley]

Merging with master
Thanks @WeichenXu123 !