Hide "Trying to get this manpage" messages for asadmin --help

Asadmin sets log level to FINE by default, unless --terse option is used. The "Trying to get this manpage" messages are useless for users, and there are many of them logged for by each asadmin command with --help option. Running asadmin with AS_DEBUG=true environment variable enables these messages if needed.

nucleus/common/common-util/src/main/java/org/glassfish/common/util/admin/ManPageFinder.java

@@ -118,7 +118,7 @@ public Object next() throws NoSuchElementException{
                         j = 0;
                     }
                 }
-                logger.log(Level.FINE, "Trying to get this manpage: {0}", result);
+                logger.log(Level.FINER, "Trying to get this manpage: {0}", result);
                 return result;
             }