Fixing the namespace from java.sun.com -> xmlns.jcp.org

Author: Arun Gupta

concurrency/executor/src/main/webapp/WEB-INF/web.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<web-app xmlns="http://java.sun.com/xml/ns/javaee"
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
-         version="3.0">
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
+         version="3.1">
 <!--    <resource-env-ref>
         <resource-env-ref-name>
             concurrent/myExecutor2