Add Checkstyle SuperFinalize

Author: garydgregory

src/conf/checkstyle.xml

@@ -73,6 +73,7 @@ limitations under the License.
     <module name="SimplifyBooleanReturn" />
     <module name="StringLiteralEquality" />
     <module name="SuperClone" />
+    <module name="SuperFinalize" />
     <module name="TypecastParenPad" />
     <module name="UnusedImports" />
     <module name="WhitespaceAfter" />