ESDEV-4666 Add /modules/ to exclude-pattern

Modules should run their own coding standards tests

Author: robertblank

Oxid/ruleset.xml

@@ -14,6 +14,7 @@
     <exclude-pattern>/config.inc.php</exclude-pattern>
     <exclude-pattern>/vendor/</exclude-pattern>
     <exclude-pattern>/tests/</exclude-pattern>
+    <exclude-pattern>/modules/</exclude-pattern>
 
     <!--  Include specific sniffs from the other standards. -->
     <rule ref="Generic.Metrics.CyclomaticComplexity"/>