MQE-1886: Ability to use grab data between ActionGroups

added functional test.
Removed functional test for return.

Author: soumyau

dev/tests/functional/tests/MFTF/DevDocs/ActionGroup/ReturnValueActionGroup.xml

@@ -51,11 +51,5 @@
             <actualResult type="array">{{ExtendedMessageData.numbers}}</actualResult>
             <expectedResult type="array">["Something New", "0", "1", "2", "3", "TESTING CASE"]</expectedResult>
         </assertEqualsCanonicalizing>
-
-        <actionGroup ref="ReturnValueActionGroup" stepKey="actionGroupValue"/>
-        <assertEquals stepKey="assertActionGroupValue">
-            <expectedResult type="variable">actionGroupValue</expectedResult>
-            <actualResult type="string">test</actualResult>
-        </assertEquals>
     </test>
 </tests>