Merge https://github.com/dubbo/dubbo-registry-etcd into incubator-dubbo

Author: ralf0131

dubbo-bom/pom.xml

@@ -138,6 +138,11 @@
                 <artifactId>dubbo-remoting-http</artifactId>
                 <version>${project.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.apache.dubbo</groupId>
+                <artifactId>dubbo-remoting-etcd3</artifactId>
+                <version>${project.version}</version>
+            </dependency>
             <dependency>
                 <groupId>org.apache.dubbo</groupId>
                 <artifactId>dubbo-rpc-api</artifactId>
@@ -218,6 +223,11 @@
                 <artifactId>dubbo-registry-redis</artifactId>
                 <version>${project.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.apache.dubbo</groupId>
+                <artifactId>dubbo-registry-etcd3</artifactId>
+                <version>${project.version}</version>
+            </dependency>
             <dependency>
                 <groupId>org.apache.dubbo</groupId>
                 <artifactId>dubbo-registry-consul</artifactId>

dubbo-dependencies-bom/pom.xml

@@ -127,6 +127,7 @@
         <rs_api_version>2.0</rs_api_version>
         <resteasy_version>3.0.19.Final</resteasy_version>
         <tomcat_embed_version>8.5.31</tomcat_embed_version>
+        <jetcd_version>0.3.0</jetcd_version>
         <!-- Log libs -->
         <slf4j_version>1.7.25</slf4j_version>
         <jcl_version>1.2</jcl_version>
@@ -379,6 +380,21 @@
                 <artifactId>tomcat-embed-logging-juli</artifactId>
                 <version>${tomcat_embed_version}</version>
             </dependency>
+            <dependency>
+                <groupId>io.etcd</groupId>
+                <artifactId>jetcd-core</artifactId>
+                <version>${jetcd_version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>io.netty</groupId>
+                        <artifactId>netty-codec-http2</artifactId>
+                    </exclusion>
+                    <exclusion>
+                        <groupId>io.netty</groupId>
+                        <artifactId>netty-handler-proxy</artifactId>
+                    </exclusion>
+                </exclusions>
+            </dependency>
             <!-- Log libs -->
             <dependency>
                 <groupId>org.slf4j</groupId>

dubbo-registry/dubbo-registry-etcd3/pom.xml

@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>dubbo-registry</artifactId>
+        <groupId>org.apache.dubbo</groupId>
+        <version>2.7.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>dubbo-registry-etcd3</artifactId>
+    <packaging>jar</packaging>
+    <name>${project.artifactId}</name>
+    <description>The etcd3 registry module of Dubbo project</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-registry-api</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-common</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-remoting-etcd3</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+    </dependencies>
+
+
+</project>