title: Rsyslog : wrong properties with reverse tunnel
body: <p>better if i show an example:</p>
  <p>original message, from host-A</p>
  <blockquote>
  <p>{&quot;@timestamp&quot;:&quot;xxxxxxx&quot;,&quot;@version&quot;:&quot;1&quot;,&quot;sysloghost&quot;:&quot;host-A&quot;,&quot;severity&quot;:&quot;xxxxxxx&quot;,&quot;facility&quot;:&quot;xxxxxxx&quot;,&quot;programname&quot;:&quot;host-A-app&quot;,&quot;procid&quot;:&quot;xxxxxxx&quot;,&quot;relayhost&quot;:&quot;host-A&quot;,&quot;relayip&quot;:&quot;host-A&quot;,&quot;message&quot;: {xxxxxxx}}}}</p>
  </blockquote>
  <p>message after reverse tunnel</p>
  <blockquote>
  <p>{&quot;@timestamp&quot;:&quot;yyyyyyy&quot;,&quot;@version&quot;:&quot;1&quot;,&quot;sysloghost&quot;:&quot;localhost&quot;,&quot;severity&quot;:&quot;notice&quot;,&quot;facility&quot;:&quot;user&quot;,&quot;programname&quot;:&quot;&quot;,&quot;procid&quot;:&quot;-&quot;,&quot;relayhost&quot;:&quot;localhost&quot;,&quot;relayip&quot;:&quot;127.0.0.1&quot;,&quot;message&quot;:{&quot;@timestamp&quot;:&quot;xxxxxxx&quot;,&quot;@version&quot;:&quot;1&quot;,&quot;sysloghost&quot;:&quot;host-A&quot;,&quot;severity&quot;:&quot;xxxxxxx&quot;,&quot;facility&quot;:&quot;xxxxxxx&quot;,&quot;programname&quot;:&quot;host-A-app&quot;,&quot;procid&quot;:&quot;xxxxxxx&quot;,&quot;relayhost&quot;:&quot;host-A&quot;,&quot;relayip&quot;:&quot;host-A&quot;,&quot;message&quot;: {xxxxxxx}}}}</p>
  </blockquote>
  <p>as you can see, properties have been replaced (original content is now the value of 'message' property).</p>
  <p>I could extract original properties with some RegExp, or text searching, but i think should be a way to keep the original values.</p>
  <p>Anyone, help?</p>