ACP2E-1120: add mftf

Author: alzota

app/code/Magento/Checkout/Test/Mftf/Test/AdminCheckZeroSubtotalOrderIsInProcessingStatusTest.xml

@@ -16,7 +16,7 @@
             <description value="Created order should be in Processing status"/>
             <severity value="MAJOR"/>
             <testCaseId value="MAGETWO-94178"/>
-            <useCaseId value="MAGETWO-71375" />
+            <useCaseId value="MAGETWO-71375"/>
             <group value="checkout"/>
         </annotations>
         <before>
@@ -38,7 +38,6 @@
             </createData>
 
             <actionGroup ref="AdminLoginActionGroup" stepKey="loginAsAdmin"/>
-
         </before>
 
         <after>

app/code/Magento/Checkout/Test/Mftf/Test/AdminCheckZeroSubtotalOrderWithCustomStatus.xml

@@ -38,7 +38,6 @@
             </createData>
 
             <actionGroup ref="AdminLoginActionGroup" stepKey="loginAsAdmin"/>
-
         </before>
 
         <after>
@@ -90,6 +89,7 @@
             <argument name="tags" value="config full_page"/>
         </actionGroup>
 
+        <!-- Add product to cart and place order -->
         <actionGroup ref="AddSimpleProductToCartActionGroup" stepKey="AddProductToCard">
             <argument name="product" value="$$simpleproduct$$"/>
         </actionGroup>
@@ -105,6 +105,7 @@
         <actionGroup ref="ClickPlaceOrderActionGroup" stepKey="clickPlaceOrder"/>
         <grabTextFrom selector="{{CheckoutSuccessMainSection.orderNumber}}" stepKey="grabOrderNumber"/>
 
+        <!-- Go to admin and check order status -->
         <actionGroup ref="AdminOrdersPageOpenActionGroup" stepKey="navigateToSalesOrderPage"/>
         <actionGroup ref="SearchAdminDataGridByKeywordActionGroup" stepKey="searchForOrder">
             <argument name="keyword" value="{$grabOrderNumber}"/>
@@ -115,7 +116,7 @@
             <argument name="status" value="{{EnableFreeOrderStatusCustom.label}}"/>
         </actionGroup>
 
-        <!-- Open create order -->
+        <!-- Open order -->
         <actionGroup ref="OpenOrderByIdActionGroup" stepKey="openOrder">
             <argument name="orderId" value="{$grabOrderNumber}"/>
         </actionGroup>

app/code/Magento/Checkout/Test/Mftf/Test/AdminCheckZeroSubtotalOrderWithGeneratedInvoiceTest.xml

@@ -16,7 +16,7 @@
             <description value="Created order with automatically invoice generated."/>
             <severity value="AVERAGE"/>
             <testCaseId value="AC-6722"/>
-            <useCaseId value="ENGCOM-5443" />
+            <useCaseId value="ENGCOM-5443"/>
             <group value="checkout"/>
         </annotations>
         <before>