MQE-1566: Fix mftf and zephyr tests that results in non unique match

Author: jilu1

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

@@ -135,8 +135,8 @@
         <annotations>
             <features value="Checkout"/>
             <stories value="Success page elements are presented for placed order as Guest"/>
-            <title value="Guest Checkout"/>
-            <description value="To be sure that other elements of Success page are presented for placed order as Guest."/>
+            <title value="Guest Checkout - elements of success page are presented for placed order as guest"/>
+            <description value="To be sure that other elements of Success page are presented for placed order as Guest"/>
             <severity value="CRITICAL"/>
             <testCaseId value="MC-16490"/>
             <group value="checkout"/>

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

@@ -12,10 +12,10 @@
         <annotations>
             <features value="Checkout"/>
             <stories value="Checkout via Guest Checkout"/>
-            <title value="Guest Checkout"/>
+            <title value="Guest Checkout - guest should be able to place an order"/>
             <description value="Should be able to place an order as a Guest"/>
             <severity value="CRITICAL"/>
-            <testCaseId value="MC-16490"/>
+            <testCaseId value="MC-12825"/>
             <group value="checkout"/>
         </annotations>
         <before>