MTA-560: Re-factor Tests for Online Onepage Checkout

- revert testcase.xml from previous commit

Author: Roman Liukshyn

dev/tests/functional/tests/app/Magento/Checkout/Test/etc/testcase.xml

@@ -9,14 +9,14 @@
   <scenario name="OnePageCheckoutTest" firstStep="setupConfiguration">
     <step name="setupConfiguration" module="Magento_Core" next="createProducts"/>
     <step name="createProducts" module="Magento_Catalog" next="createTaxRule"/>
-    <step name="createTaxRule" module="Magento_Tax" next="addProductsToTheCart"/>
+    <step name="createTaxRule" module="Magento_Tax" next="createRewardExchangeRates"/>
     <step name="addProductsToTheCart" module="Magento_Checkout" next="estimateShippingAndTax"/>
-    <step name="estimateShippingAndTax" module="Magento_Checkout" next="proceedToCheckout"/>
+    <step name="estimateShippingAndTax" module="Magento_Checkout" next="applyGiftCard"/>
     <step name="proceedToCheckout" module="Magento_Checkout" next="createCustomer"/>
-    <step name="createCustomer" module="Magento_Customer" next="selectCheckoutMethod"/>
+    <step name="createCustomer" module="Magento_Customer" next="applyCustomerBalanceToCustomer"/>
     <step name="selectCheckoutMethod" module="Magento_Checkout" next="fillBillingInformation"/>
     <step name="fillBillingInformation" module="Magento_Checkout" next="fillShippingMethod"/>
-    <step name="fillShippingMethod" module="Magento_Checkout" next="selectPaymentMethod"/>
+    <step name="fillShippingMethod" module="Magento_Checkout" next="selectStoreCredit"/>
     <step name="selectPaymentMethod" module="Magento_Checkout" next="placeOrder"/>
     <step name="placeOrder" module="Magento_Checkout"/>
   </scenario>