ui: metrics: set default for port

while it may not be always correct, we can only win by setting a
reasonable default, taken from

* graphite:
  https://graphite.readthedocs.io/en/stable/feeding-carbon.html#the-plaintext-protocol
* influxdb, udp port:
  https://docs.influxdata.com/influxdb/v1.8/administration/ports/

Also, changing that is easy for the admin and can always be done
afterwards.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/manager6/dc/MetricServerView.js

@@ -224,6 +224,7 @@ Ext.define('PVE.dc.InfluxDBEdit', {
 		    xtype: 'proxmoxintegerfield',
 		    name: 'port',
 		    fieldLabel: gettext('Port'),
+		    value: 8089,
 		    minValue: 1,
 		    maximum: 65536,
 		    allowBlank: false,
@@ -303,6 +304,7 @@ Ext.define('PVE.dc.GraphiteEdit', {
 		    xtype: 'proxmoxintegerfield',
 		    name: 'port',
 		    fieldLabel: gettext('Port'),
+		    value: 2003,
 		    minimum: 1,
 		    maximum: 65536,
 		    allowBlank: false,