[SPARK-25256][SQL][TEST] Plan mismatch errors in Hive tests in Scala 2.12

## What changes were proposed in this pull request?

### For `SPARK-5775 read array from partitioned_parquet_with_key_and_complextypes`:

scala2.12
```
scala> (1 to 10).toString
res4: String = Range 1 to 10
```

scala2.11
```
scala> (1 to 10).toString
res2: String = Range(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
```
And

```
  def prepareAnswer(answer: Seq[Row], isSorted: Boolean): Seq[Row] = {
    val converted: Seq[Row] = answer.map(prepareRow)
    if (!isSorted) converted.sortBy(_.toString()) else converted
  }
```
sortBy `_.toString` is not a good idea.

### Other failures are caused by

```
Array(Int.box(1)).toSeq == Array(Double.box(1.0)).toSeq
```

It is false in 2.12.2 + and is true in 2.11.x , 2.12.0, 2.12.1

## How was this patch tested?

This is a  patch on a specific unit test.

Closes apache#22264 from sadhen/SPARK25256.

Authored-by: 忍冬 <[email protected]>
Signed-off-by: Sean Owen <[email protected]>

Author: 忍冬

sql/core/src/test/scala/org/apache/spark/sql/QueryTest.scala

@@ -290,6 +290,16 @@ object QueryTest {
     Row.fromSeq(row.toSeq.map {
       case null => null
       case d: java.math.BigDecimal => BigDecimal(d)
+      // Equality of WrappedArray differs for AnyVal and AnyRef in Scala 2.12.2+
+      case seq: Seq[_] => seq.map {
+        case b: java.lang.Byte => b.byteValue
+        case s: java.lang.Short => s.shortValue
+        case i: java.lang.Integer => i.intValue
+        case l: java.lang.Long => l.longValue
+        case f: java.lang.Float => f.floatValue
+        case d: java.lang.Double => d.doubleValue
+        case x => x
+      }
       // Convert array to Seq for easy equality check.
       case b: Array[_] => b.toSeq
       case r: Row => prepareRow(r)

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

@@ -1068,7 +1068,7 @@ abstract class ParquetPartitioningTest extends QueryTest with SQLTestUtils with
     test(s"SPARK-5775 read array from $table") {
       checkAnswer(
         sql(s"SELECT arrayField, p FROM $table WHERE p = 1"),
-        (1 to 10).map(i => Row(1 to i, 1)))
+        (1 to 10).map(i => Row((1 to i).toArray, 1)))
     }
   }