log4shell prevention

jPOS doesn't use log4j, but here is our 2c to mitigate the problem
in jPOS based applications that might use log4j

Author: ar

jpos/src/main/java/org/jpos/q2/Q2.java

@@ -740,6 +740,8 @@ private void parseCmdLine (String[] args) {
         options.addOption ("Ed", "envdir", true, "Environment file directory, defaults to cfg");
 
         try {
+            System.setProperty("log4j2.formatMsgNoLookups", "true"); // log4shell prevention
+
             CommandLine line = parser.parse (options, args);
             if (line.hasOption ("v")) {
                 displayVersion();