Add compatible module and rename groupId to org.apache.dubbo (#1952)

* remove dubbo-test-examples and dubbo-test-benchmark

* rename package to org.apache.dubbo

* support old SPI file

* remove final for RpcException and URL

* add debug sysout in UT

* add debug info in UT

* ignore 2 cases temporary

* add finally clear for SHUTDOWN_WAIT_KEY property

* clear SHUTDOWN_WAIT_KEY before test

* add dubbo SPI and interface bridge class

* support EchoService and GenericService

* rename groupId to org.apache.dubbo

* add debug info for UT

.codecov.yml

@@ -6,5 +6,5 @@ coverage:
         threshold: 0.1%
 ignore:
   - "dubbo-demo/.*"
-  - "dubbo-common/src/main/java/com/alibaba/dubbo/common/json/*.java" #  internal JSON impl is deprecate, ignore test coverage for them
-  - "dubbo-config/dubbo-config-spring/src/main/java/com/alibaba/dubbo/config/spring/AnnotationBean.java" # Deprecated
+  - "dubbo-common/src/main/java/org/apache/dubbo/common/json/*.java" #  internal JSON impl is deprecate, ignore test coverage for them
+  - "dubbo-config/dubbo-config-spring/src/main/java/org/apache/dubbo/config/spring/AnnotationBean.java" # Deprecated

CONTRIBUTING.md

@@ -5,10 +5,10 @@ Dubbo is released under the non-restrictive Apache 2.0 license, and follows a ve
 Before we accept a non-trivial patch or pull request we will need you to sign the Contributor License Agreement. Signing the contributor’s agreement does not grant anyone commit rights to the main repository, but it does mean that we can accept your contributions, and you will get an author credit if we do. Active contributors might be asked to join the core team, and given the ability to merge pull requests.
 ### Code Conventions
 Our code style is almost in line with the standard java conventions(Popular IDE's default setting satisfy this), only changed the following two restricts:  
-1. Classes under 'com.alibaba.*' and 'com.taobao.*' package are grouped separately, and put on top of all other 'imports'.  
+1. Classes under 'org.apache.dubbo.*' and 'com.taobao.*' package are grouped separately, and put on top of all other 'imports'.  
 2. If there are more than 120 characters in current line, start a new line.
 
-We provide a template file [dubbo_codestyle_for_idea.xml](https://github.com/alibaba/dubbo/tree/master/codestyle/dubbo_codestyle_for_idea.xml) for IntelliJ idea, you can import it to you IDE. If you use Eclipse you can config manually by referencing the same file.  
+We provide a template file [dubbo_codestyle_for_idea.xml](https://github.com/apache/incubator-dubbo/tree/master/codestyle/dubbo_codestyle_for_idea.xml) for IntelliJ idea, you can import it to you IDE. If you use Eclipse you can config manually by referencing the same file.  
 
 * Make sure all new .java files to have a simple Javadoc class comment with at least a @date tag identifying birth, and preferably at least a paragraph on what the class is for.
 

LICENSE

@@ -208,54 +208,6 @@ Apache Dubbo includes a number of submodules with separate copyright notices
 and license terms. Your use of these submodules is subject to the terms and
 conditions of the following licenses.
 
-
-For the hessian-lite submodule:
-
-The Apache Software License, Version 1.1
-
- Copyright (c) 2001-2004 Caucho Technology, Inc.  All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- 1. Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer.
-
- 2. Redistributions in binary form must reproduce the above copyright
-    notice, this list of conditions and the following disclaimer in
-    the documentation and/or other materials provided with the
-    distribution.
-
- 3. The end-user documentation included with the redistribution, if
-    any, must include the following acknowlegement:
-       "This product includes software developed by the
-        Caucho Technology (http://www.caucho.com/)."
-    Alternately, this acknowlegement may appear in the software itself,
-    if and wherever such third-party acknowlegements normally appear.
-
- 4. The names "Hessian", "Resin", and "Caucho" must not be used to
-    endorse or promote products derived from this software without prior
-    written permission. For written permission, please contact
-    [email protected].
-
- 5. Products derived from this software may not be called "Resin"
-    nor may "Resin" appear in their names without prior written
-    permission of Caucho Technology.
-
- THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- DISCLAIMED.  IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
- BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
- IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
 For the org.apache.dubbo.common.concurrent package:
 
 This product bundles and repackages the following code in Google Guava 16.0.1, which is available under a

PULL_REQUEST_TEMPLATE.md

@@ -15,6 +15,6 @@ Follow this checklist to help us incorporate your contribution quickly and easil
 - [x] Make sure there is a [GITHUB_issue](https://github.com/apache/incubator-dubbo/issues) filed for the change (usually before you start working on it). Trivial changes like typos do not require a GITHUB issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
 - [ ] Format the pull request title like `[Dubbo-XXX] Fix UnknownException when host config not exist #XXX`. Each commit in the pull request should have a meaningful subject line and body.
 - [ ] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
-- [ ] Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in [test module](https://github.com/alibaba/dubbo/tree/master/dubbo-test).
+- [ ] Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in [test module](https://github.com/apache/incubator-dubbo/tree/master/dubbo-test).
 - [ ] Run `mvn clean install -DskipTests` & `mvn clean test-compile failsafe:integration-test` to make sure unit-test and integration-test pass.
 - [ ] If this contribution is large, please follow the [Software Donation Guide](https://github.com/apache/incubator-dubbo/wiki/Software-donation-guide).