MQE-561: [ALLURE] Add an enum to the "Severity" annotation xml schema.

- Updating tests so all severity values present are Magento severity values per enum

Author: magterskine

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Analytics/Test/AdminConfigurationBlankIndustryCest.xml

@@ -13,7 +13,7 @@
             <stories value="Try to save empty Magento Advanced Reporting vertical"/>
             <title value="Try to save empty Magento Advanced Reporting vertical"/>
             <description value="An admin user cannot save a blank industry setting on the Advanced Reporting configuration page."/>
-            <severity value="NORMAL"/>
+            <severity value="MAJOR"/>
             <testCaseId value="MAGETWO-63981"/>
             <group value="analytics"/>
             <group value="skip"/>

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Analytics/Test/AdminConfigurationEnableDisableAnalyticsCest.xml

@@ -13,7 +13,7 @@
             <stories value="Enable/disable Advanced Reporting"/>
             <title value="Enable Disable Advanced Reporting"/>
             <description value="An admin user can enable/disable Advanced Reporting."/>
-            <severity value="NORMAL"/>
+            <severity value="MAJOR"/>
             <testCaseId value="MAGETWO-66465"/>
             <group value="analytics"/>
         </annotations>

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Analytics/Test/AdminConfigurationIndustryCest.xml

@@ -14,7 +14,7 @@
             <stories value="Set Magento Advanced reporting industry"/>
             <title value="Set Magento Advanced reporting industry"/>
             <description value="An admin user can change the industry setting on the Advanced Reporting configuration page."/>
-            <severity value="NORMAL"/>
+            <severity value="MAJOR"/>
             <testCaseId value="MAGETWO-63898"/>
             <group value="analytics"/>
         </annotations>

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Sales/Test/AdminCreateInvoiceCest.xml

@@ -14,7 +14,7 @@
             <stories value="Create an Invoice via the Admin"/>
             <title value="Create Invoice"/>
             <description value="Should be able to create an invoice via the admin."/>
-            <severity value="NORMAL"/>
+            <severity value="MAJOR"/>
             <testCaseId value="MAGETWO-72096"/>
             <group value="sales"/>
         </annotations>