Add time_server setting to allow user to provide their own server.

Author: h2zero

src/lfs/server_settings.lua

@@ -30,7 +30,8 @@ local function process(request)
 			endpoint_type = request.body.endpoint_type,
 			blink = request.body.blink,
 			discovery = request.body.discovery,
-			aws = request.body.aws
+			aws = request.body.aws,
+			time_server = request.body.time_server
 		}))
 		setVar("sensors",   require("variables_build")(request.body.sensors))
 		setVar("actuators", require("variables_build")(request.body.actuators))

src/lfs/wifi.lua

@@ -61,7 +61,7 @@ local _ = tmr.create():alarm(900, tmr.ALARM_AUTO, function(t)
     gpio.write(4, gpio.HIGH)
     enduser_setup.stop()
 
-    sntp.sync({gw, 'time.google.com', 'pool.ntp.org'},
+    sntp.sync({require("settings").time_server or gw, 'time.google.com', 'pool.ntp.org'},
       function(sec)
         tm = rtctime.epoch2cal(sec)
         print("Heap: ", node.heap(), "Current Date/Time:",