Prerequisite for JENKINS-25785 in order to break dependency cycle when windows-slaves will depend on credentials

core/src/main/java/hudson/ClassicPluginStrategy.java

@@ -342,7 +342,9 @@ public class ClassicPluginStrategy implements PluginStrategy {
             "script-security/matrix-auth",
             "script-security/windows-slaves",
             "script-security/antisamy-markup-formatter",
-            "script-security/matrix-project"
+            "script-security/matrix-project",
+            "credentials/matrix-auth",
+            "credentials/windows-slaves"
     ));
 
     /**