Replace deprecated reference to Action Group

Author: lbajsarowicz

app/code/Magento/Backend/Test/Mftf/Test/AdminLoginTest.xml

@@ -20,7 +20,7 @@
             <group value="login"/>
         </annotations>
 
-        <actionGroup ref="LoginAsAdmin" stepKey="loginAsAdmin"/>
+        <actionGroup ref="AdminLoginActionGroup" stepKey="loginAsAdmin"/>
         <seeInCurrentUrl url="{{AdminLoginPage.url}}" stepKey="seeAdminLoginUrl"/>
         <actionGroup ref="AdminLogoutActionGroup" stepKey="logoutFromAdmin"/>
     </test>