[SPARK-14893][SQL] Re-enable HiveSparkSubmitSuite SPARK-8489 test after HiveContext is removed

## What changes were proposed in this pull request?

Enable the test that was disabled when HiveContext was removed.

## How was this patch tested?

Made sure the enabled test passes with the new jar.

Author: Dilip Biswal <dbiswal@us.ibm.com>

Closes #12924 from dilipbiswal/spark-14893.

sql/hive/src/test/resources/regression-test-SPARK-8489/Main.scala

@@ -15,7 +15,6 @@
  * limitations under the License.
  */
 
-import org.apache.spark.SparkContext
 import org.apache.spark.sql.SparkSession
 
 /**
@@ -33,15 +32,18 @@ object Main {
   def main(args: Array[String]) {
     // scalastyle:off println
     println("Running regression test for SPARK-8489.")
-    val sc = new SparkContext("local", "testing")
-    val sparkSession = SparkSession.withHiveSupport(sc)
+    val spark = SparkSession.builder
+      .master("local")
+      .appName("testing")
+      .enableHiveSupport()
+      .getOrCreate()
     // This line should not throw scala.reflect.internal.MissingRequirementError.
     // See SPARK-8470 for more detail.
-    val df = sparkSession.createDataFrame(Seq(MyCoolClass("1", "2", "3")))
+    val df = spark.createDataFrame(Seq(MyCoolClass("1", "2", "3")))
     df.collect()
     println("Regression test for SPARK-8489 success!")
     // scalastyle:on println
-    sc.stop()
+    spark.stop()
   }
 }
 

sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveSparkSubmitSuite.scala

@@ -142,8 +142,7 @@ class HiveSparkSubmitSuite
     runSparkSubmit(args)
   }
 
-  // TODO: re-enable this after rebuilding the jar (HiveContext was removed)
-  ignore("SPARK-8489: MissingRequirementError during reflection") {
+  test("SPARK-8489: MissingRequirementError during reflection") {
     // This test uses a pre-built jar to test SPARK-8489. In a nutshell, this test creates
     // a HiveContext and uses it to create a data frame from an RDD using reflection.
     // Before the fix in SPARK-8470, this results in a MissingRequirementError because