Merge pull request #1839, remove validation key from provider url registered to registry.

Fixes #1386.
diff --git a/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryProtocol.java b/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryProtocol.java
index 3f5b731..fd414ed 100644
--- a/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryProtocol.java
+++ b/dubbo-registry/dubbo-registry-api/src/main/java/com/alibaba/dubbo/registry/integration/RegistryProtocol.java
@@ -50,6 +50,7 @@
 import static com.alibaba.dubbo.common.Constants.ACCEPT_FOREIGN_IP;

 import static com.alibaba.dubbo.common.Constants.QOS_ENABLE;

 import static com.alibaba.dubbo.common.Constants.QOS_PORT;

+import static com.alibaba.dubbo.common.Constants.VALIDATION_KEY;

 

 /**

  * RegistryProtocol

@@ -227,7 +228,8 @@
                 .removeParameter(Constants.BIND_PORT_KEY)

                 .removeParameter(QOS_ENABLE)

                 .removeParameter(QOS_PORT)

-                .removeParameter(ACCEPT_FOREIGN_IP);

+                .removeParameter(ACCEPT_FOREIGN_IP)

+                .removeParameter(VALIDATION_KEY);

         return registedProviderUrl;

     }