[update] update configuration template

iot-edge-modbus-template.json

@@ -4,6 +4,8 @@
     "Slave01": {
       "SlaveConnection": "ipv4 address or the serial port name to Modbus device",
       "TcpPort": "tcp port of Modbus connection, default is 502",
+      "RetryCount": "the max retry attempt when socket receive buffer is empty, default is 10",
+      "RetryInterval": "the wait interval in millisecond between each retry, default is 100",
       "HwId": "unique HW Id defined by user",
       "BaudRate": "baud rate of serial communication (Modbus RTU only)",
       "DataBits": "data bits of serial communication (Modbus RTU only)",

iot-edge-modbus.json

@@ -4,6 +4,8 @@
     "Slave01": {
       "SlaveConnection": "127.0.0.1",
       "TcpPort": "502",
+      "RetryCount": "10",
+      "RetryInterval": "100",
       "HwId": "PowerMeter-0a:01:01:01:01:01",
       "Operations": {
         "Op01": {