MAGETWO-82420: Fix UpgradeSystemTest

- changes after CR

Author: vgoncharenko

dev/tests/functional/tests/app/Magento/Setup/Test/TestCase/UpgradeSystemTest.xml

@@ -18,7 +18,7 @@
             <data name="upgrade/optionsMedia" xsi:type="string">No</data>
             <data name="upgrade/optionsDb" xsi:type="string">No</data>
             <data name="upgrade/otherComponents" xsi:type="string">{otherComponents}</data>
-            <data name="upgrade/otherComponentsList" xsi:type="array" />
+            <data name="upgrade/otherComponentsList" xsi:type="null" />
         </variation>
     </testCase>
 </config>