[airos] updated docs for ntp client and ntp servers

Author: edoput

docs/source/backends/airos.rst

@@ -162,15 +162,35 @@ NTP servers
 
 This is an extension to the `NetJSON` specification.
 
-By setting the key ``ntp_servers`` in your input you can provide a list of ntp servers to use.
+By setting the key ``ntp`` property in your input you can provide the configuration for the ntp client running on the device.
 
 .. code-block:: json
 
     {
         "type": "DeviceConfiguration",
-        "ntp_servers": [
-            "0.ubnt.pool.ntp.org"
-        ]
+        "ntp": {
+            "enabled": true,
+            "server": [
+                "0.ubnt.pool.ntp.org"
+            ]
+        }
+    }
+
+For the lazy one we provide these defaults
+
+.. code-block:: json
+
+    {
+        "type": "DeviceConfiguration",
+        "ntp": {
+            "enabled": true,
+            "server": [
+                "0.pool.ntp.org",
+                "1.pool.ntp.org",
+                "2.pool.ntp.org",
+                "3.pool.ntp.org"
+            ]
+        }
     }
 
 Users