AC-663: Create phpcs static check for ClassesTest::testPhpCode

Author: svera

Magento2/ruleset.xml

@@ -115,7 +115,7 @@
         <severity>10</severity>
         <type>error</type>
     </rule>
-    <rule ref="Magento2.Legacy.ClassesConfiguration">
+    <rule ref="Magento2.Legacy.ClassReferencesInConfigurationFiles">
         <include-pattern>*\/etc/*.xml$</include-pattern>
         <exclude-pattern>*\/etc/wsdl.xml$</exclude-pattern>
         <exclude-pattern>*\/etc/wsdl2.xml$</exclude-pattern>