Revise dnsagent service and its default port

data/conf/cgrates/cgrates.json

@@ -666,7 +666,7 @@
 
 // "dns_agent": {
 // 	"enabled": false,											// enables the DNS agent: <true|false>
-// 	"listen": "127.0.0.1:2053",									// address where to listen for DNS requests <x.y.z.y:1234>
+// 	"listen": "127.0.0.1:53",									// address where to listen for DNS requests <x.y.z.y:1234>
 // 	"listen_net": "udp",										// network to listen on <udp|tcp|tcp-tls>
 // 	"sessions_conns": ["*internal"],
 // 	"timezone": "",												// timezone of the events if not specified  <UTC|Local|$IANA_TZ_DB>

data/conf/samples/dnsagent_internal/cgrates.json

@@ -66,12 +66,16 @@
 "dns_agent": {
 	"enabled": true,
 	"listeners":[
-        {
-            "address":":2053",
+		{
+			"address":":2053",
+			"network":"tcp"
+        },
+		{
+			"address":":2053",
 			"network":"udp"
-        }
+		}
     ],
-	"sessions_conns": ["*localhost"],
+	"sessions_conns": ["*localhost"]
 },
 
 

data/conf/samples/dnsagent_reload/cgrates.json

@@ -43,11 +43,6 @@
     "enabled": true
 },
 
-// "tls": {
-// 	"server_certificate" : "d",
-//     "server_key":"2"
-// },
-
 "dns_agent": {
     "enabled": true,
     "listeners":[