[SPARK-34392][SQL] Support ZoneOffset +h:mm in DateTimeUtils. getZoneId

### What changes were proposed in this pull request?
To support +8:00 in Spark3 when execute sql
`select to_utc_timestamp("2020-02-07 16:00:00", "GMT+8:00")`

### Why are the changes needed?
+8:00 this format is supported in PostgreSQL,hive, presto, but not supported in Spark3
https://issues.apache.org/jira/browse/SPARK-34392

### Does this PR introduce _any_ user-facing change?
no

### How was this patch tested?
unit test

Closes #31624 from Karl-WangSK/zone.

Lead-authored-by: ShiKai Wang <wskqing@gmail.com>
Co-authored-by: Karl-WangSK <shikai.wang@linkflowtech.com>
Signed-off-by: Sean Owen <srowen@gmail.com>

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala

@@ -50,7 +50,10 @@ object DateTimeUtils {
 
   val TIMEZONE_OPTION = "timeZone"
 
-  def getZoneId(timeZoneId: String): ZoneId = ZoneId.of(timeZoneId, ZoneId.SHORT_IDS)
+  def getZoneId(timeZoneId: String): ZoneId = {
+    // To support the (+|-)h:mm format because it was supported before Spark 3.0.
+    ZoneId.of(timeZoneId.replaceFirst("(\\+|\\-)(\\d):", "$10$2:"), ZoneId.SHORT_IDS)
+  }
   def getTimeZone(timeZoneId: String): TimeZone = TimeZone.getTimeZone(getZoneId(timeZoneId))
 
   /**

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/DateTimeUtilsSuite.scala

@@ -471,6 +471,13 @@ class DateTimeUtilsSuite extends SparkFunSuite with Matchers with SQLHelper {
         test("2011-12-25 09:00:00.123456", JST.getId, "2011-12-25 18:00:00.123456")
         test("2011-12-25 09:00:00.123456", LA.getId, "2011-12-25 01:00:00.123456")
         test("2011-12-25 09:00:00.123456", "Asia/Shanghai", "2011-12-25 17:00:00.123456")
+        test("2011-12-25 09:00:00.123456", "-7", "2011-12-25 02:00:00.123456")
+        test("2011-12-25 09:00:00.123456", "+8:00", "2011-12-25 17:00:00.123456")
+        test("2011-12-25 09:00:00.123456", "+8:00:00", "2011-12-25 17:00:00.123456")
+        test("2011-12-25 09:00:00.123456", "+0800", "2011-12-25 17:00:00.123456")
+        test("2011-12-25 09:00:00.123456", "-071020", "2011-12-25 01:49:40.123456")
+        test("2011-12-25 09:00:00.123456", "-07:10:20", "2011-12-25 01:49:40.123456")
+
       }
     }
 
@@ -496,6 +503,12 @@ class DateTimeUtilsSuite extends SparkFunSuite with Matchers with SQLHelper {
         test("2011-12-25 18:00:00.123456", JST.getId, "2011-12-25 09:00:00.123456")
         test("2011-12-25 01:00:00.123456", LA.getId, "2011-12-25 09:00:00.123456")
         test("2011-12-25 17:00:00.123456", "Asia/Shanghai", "2011-12-25 09:00:00.123456")
+        test("2011-12-25 02:00:00.123456", "-7", "2011-12-25 09:00:00.123456")
+        test("2011-12-25 17:00:00.123456", "+8:00", "2011-12-25 09:00:00.123456")
+        test("2011-12-25 17:00:00.123456", "+8:00:00", "2011-12-25 09:00:00.123456")
+        test("2011-12-25 17:00:00.123456", "+0800", "2011-12-25 09:00:00.123456")
+        test("2011-12-25 01:49:40.123456", "-071020", "2011-12-25 09:00:00.123456")
+        test("2011-12-25 01:49:40.123456", "-07:10:20", "2011-12-25 09:00:00.123456")
       }
     }
 

sql/core/src/test/scala/org/apache/spark/sql/internal/SQLConfSuite.scala

@@ -414,13 +414,12 @@ class SQLConfSuite extends QueryTest with SharedSparkSession {
     spark.conf.set(SQLConf.SESSION_LOCAL_TIMEZONE.key, "America/Chicago")
     assert(sql(s"set ${SQLConf.SESSION_LOCAL_TIMEZONE.key}").head().getString(1) ===
       "America/Chicago")
+    spark.conf.set(SQLConf.SESSION_LOCAL_TIMEZONE.key, "GMT+8:00")
+    assert(sql(s"set ${SQLConf.SESSION_LOCAL_TIMEZONE.key}").head().getString(1) === "GMT+8:00")
 
     intercept[IllegalArgumentException] {
       spark.conf.set(SQLConf.SESSION_LOCAL_TIMEZONE.key, "pst")
     }
-    intercept[IllegalArgumentException] {
-      spark.conf.set(SQLConf.SESSION_LOCAL_TIMEZONE.key, "GMT+8:00")
-    }
     val e = intercept[IllegalArgumentException] {
       spark.conf.set(SQLConf.SESSION_LOCAL_TIMEZONE.key, "Asia/shanghai")
     }