[NEW] Add prometheus port config (#11115)

* Semantic markup

* Fix spelling of "collaborative"

* Add `Prometheus_Port` configuration item

* Add `Prometheus_Port` configuration item

* Remove unrelated change

* Restore default value for `Prometheus_Port` to `9100`

packages/rocketchat-lib/server/lib/metrics.js

@@ -147,7 +147,7 @@ let timer;
 RocketChat.settings.get('Prometheus_Enabled', (key, value) => {
 	if (value === true) {
 		server.listen({
-			port: 9100,
+			port: RocketChat.settings.get('Prometheus_Port'),
 			host: process.env.BIND_IP || '0.0.0.0'
 		});
 		timer = Meteor.setInterval(setPrometheusData, 5000);

packages/rocketchat-lib/server/startup/settings.js

@@ -1714,6 +1714,10 @@ RocketChat.settings.addGroup('Logs', function() {
 			type: 'boolean',
 			i18nLabel: 'Enabled'
 		});
+		this.add('Prometheus_Port', 9100, {
+			type: 'string',
+			i18nLabel: 'Port'
+		});
 	});
 });