Test improvements:

 - added testCaseId and Severity

Author: okolesnyk

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

@@ -13,8 +13,10 @@
             <features value="Checkout"/>
             <title value="Js validation error messages must be absent for required fields after checkout start."/>
             <description value="Js validation error messages must be absent for required fields after checkout start."/>
-            <group value="shoppingCart"/>
-            <group value="mtf_migrated"/>
+            <severity value="MAJOR" />
+            <testCaseId value="MC-18312" />
+            <group value="shoppingCart" />
+            <group value="mtf_migrated" />
         </annotations>
         <before>
             <createData entity="_defaultCategory" stepKey="createCategory"/>