[SPARK-31725][CORE][SQL][TESTS] Set America/Los_Angeles time zone and Locale.US in tests by default

[MaxGekk]

What changes were proposed in this pull request?

Set default time zone and locale in the default constructor of SparkFunSuite:

• Default time zone to America/Los_Angeles
• Default locale to Locale.US

Why are the changes needed?

1. To deduplicate code by moving common time zone and locale settings to one place SparkFunSuite
2. To have the same default time zone and locale in all tests. This should prevent errors like [SPARK-31526][SQL][TESTS][FOLLOWUP] Make ExpressionInfo independent from local time zone #28538

Does this PR introduce any user-facing change?

No

How was this patch tested?

by running all affected test suites

[SparkQA]

Test build #122691 has finished for PR 28548 at commit 591a097.

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

[MaxGekk]

jenkins, retest this, please

[SparkQA]

Test build #122695 has finished for PR 28548 at commit 591a097.

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

[MaxGekk]

@cloud-fan @HyukjinKwon Please, review this PR.

[srowen]

Seems OK to me. We still have some tests that exercise other time zones right?

[MaxGekk]

We still have some tests that exercise other time zones right?

@srowen Right, there is this method DateTimeTestUtils.withDefaultTimeZone which allows to set a time zone temporary:

$  find . -name "*Suite.scala" -print0|xargs -0 grep -l withDefaultTimeZone
./external/avro/src/test/scala/org/apache/spark/sql/avro/AvroSuite.scala
./sql/core/src/test/scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala
./sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/DateTimeUtilsSuite.scala
./sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/RebaseDateTimeSuite.scala
./sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CollectionExpressionsSuite.scala
./sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
./sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/DateExpressionsSuite.scala
./sql/catalyst/src/test/scala/org/apache/spark/sql/util/TimestampFormatterSuite.scala

As far as I know there are no test suites that assume a default time zone that is different from America/Los_Angeles.

[cloud-fan]

thanks, merging to master/3.0!