[SPARK-20473] Enabling missing types in ColumnVector.Array

## What changes were proposed in this pull request?
ColumnVector implementations originally did not support some Catalyst types (float, short, and boolean). Now that they do, those types should be also added to the ColumnVector.Array.

## How was this patch tested?
Tested using existing unit tests.

Author: Michal Szafranski <michal@databricks.com>

Closes #17772 from michal-databricks/spark-20473.

sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/ColumnVector.java

@@ -180,7 +180,7 @@ public abstract class ColumnVector implements AutoCloseable {
 
     @Override
     public boolean getBoolean(int ordinal) {
-      throw new UnsupportedOperationException();
+      return data.getBoolean(offset + ordinal);
     }
 
     @Override
@@ -188,7 +188,7 @@ public abstract class ColumnVector implements AutoCloseable {
 
     @Override
     public short getShort(int ordinal) {
-      throw new UnsupportedOperationException();
+      return data.getShort(offset + ordinal);
     }
 
     @Override
@@ -199,7 +199,7 @@ public abstract class ColumnVector implements AutoCloseable {
 
     @Override
     public float getFloat(int ordinal) {
-      throw new UnsupportedOperationException();
+      return data.getFloat(offset + ordinal);
     }
 
     @Override