Update minimum required schema to 3.1.

itest/context/src/test/resources/protect-pointcut-performance-app-context.xml

@@ -2,7 +2,7 @@
     xmlns:sec="http://www.springframework.org/schema/security"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
-                        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd">
+                        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd">
 
     <sec:global-method-security>
         <sec:protect-pointcut expression="execution(* org.springframework.security.core.session.SessionRegistry.refreshLastRequest(..))" access="ROLE_ADMIN" />