[ENHANCEMENT] Lower logs of passing hooks

Logs like: executing hook org.apache.james.smtpserver.jmx.HookResultJMXMonitor@13071819

Aren't very useful and do generate a lot of noise.

It makes audit of the SMTP traces harder.

Hence moving it to traces.

Author: chibenwa

protocols/smtp/src/main/java/org/apache/james/protocols/smtp/core/log/HookResultLogger.java

@@ -48,7 +48,7 @@ public HookResult onHookResult(SMTPSession session, HookResult hResult, long exe
                 hResult.getSmtpRetCode(),
                 hResult.getSmtpDescription());
         } else {
-            LOGGER.debug("{}: result= ({} {})", hook.getClass().getName(),
+            LOGGER.trace("{}: result= ({} {})", hook.getClass().getName(),
                 result.getAction(),
                 result.getConnectionStatus());
         }