fix(iot-serv): fix replace call on TwinClient (#1658)

Author: brycewang-microsoft

service/iot-service-client/src/main/java/com/microsoft/azure/sdk/iot/service/twin/TwinClient.java

@@ -321,11 +321,11 @@ public Twin replace(Twin twin, String ifMatch) throws IotHubException, IOExcepti
         URL url;
         if (twin.getModuleId() == null || twin.getModuleId().length() == 0)
         {
-            url = this.iotHubConnectionString.getUrlTwin(twin.getDeviceId());
+            url = IotHubConnectionString.getUrlTwin(this.hostName, twin.getDeviceId());
         }
         else
         {
-            url = this.iotHubConnectionString.getUrlModuleTwin(twin.getDeviceId(), twin.getModuleId());
+            url = IotHubConnectionString.getUrlModuleTwin(this.hostName, twin.getDeviceId(), twin.getModuleId());
         }
 
         TwinState twinState = new TwinState(twin.getTags(), twin.getDesiredProperties(), null);

service/iot-service-samples/device-twin-sample/src/main/java/samples/com/microsoft/azure/sdk/iot/DeviceTwinSample.java

@@ -105,8 +105,6 @@ private static void replaceDesiredProperties(TwinClient twinClient, Twin deviceT
     {
         deviceTwin.getDesiredProperties().put("temp", new Random().nextInt(TEMPERATURE_RANGE));
 
-        // By replacing the twin rather than patching it, any desired properties that existed on the twin prior to this call
-        // that aren't present on the new set of desired properties will be deleted.
         System.out.println("Replacing Device twin");
         deviceTwin = twinClient.replace(deviceTwin);