Add introduce doc to incubating features menu (#1265)

* provides a optional-plugin for tracking ignores enhancement(#1203)

* trace ignore plugin config support override by system.env

* optimize the trace ignore plugin and make normalization of pom

* add AntPathMatcher and an junit test for it

* No longer rely on the spring framework

* add license at file header

* rebuild pom and rewrite README

* rebuild optional-plugins pom

* clean up useless code

* modify junit

* rewrite the ant path match logic

* rename the matcher class

* add the trace ignore plugin introduce doc to incubating features menu.

* modify the README doc.

* remove Chinese in English doc.

* remove superfluous content of EN-doc.

* Update README.md

apm-sniffer/optional-plugins/trace-ignore-plugin/README.md

-#How to use trace ignore plugin
-Please copy the apm-trace-ignore-plugin-x.jar to `agent/plugins`
+## Support custom trace ignore
+Here is an optional plugin `apm-trace-ignore-plugin`
+
+## Introduce
+- The purpose of this plugin is to filter custom services which are expected to ignore from the tracing system.
+- You can set up multiple URL path patterns, The services matches these patterns means won't be traced and analysis by agent and collector.
+- The current matching rule follows `Ant Path` match style , like `/path/*`, `/path/**`, `/path/?`.
+- Copy `apm-trace-ignore-plugin-x.jar` to `agent/plugins`, restarting the `agent` can effect the plugin.                                                                                                         
+
+## How to configure
+There are two ways to configure ignore patterns. Settings through system env has higher priority.
+ 1. Set through the system environment variable,you need to add `skywalking.trace.ignore_path` to the system variables, the value is the path that you need to ignore, multiple paths should be separated by `,`
+ 2. Copy`/agent/optional-plugins/apm-trace-ignore-plugin/apm-trace-ignore-plugin.config` to `/agent/config/` dir, And add settings
+```
+trace.ignore_path=/your/path/1/**,/your/path/2/**
+```
 
-## How to set config 
- 1. This plugin support reading config from environment variables(The env key must start with `skywalking.`, the reuslt should be as same as in `apm-trace-ignore-plugin.config`)
- 2. Or you can copy the `apm-trace-ignore-plugin.config` to `agent/config` then you'll set you need ignore paths in `apm-trace-ignore-plugin.config`

apm-sniffer/optional-plugins/trace-ignore-plugin/README_CN.md

+## 个性化服务过滤
+提供了一个可选插件 `apm-trace-ignore-plugin`
+
+## 介绍
+- 这个插件的作用是对追踪的个性化服务过滤.
+- 你可以设置多个需要忽略的路径, 意味着包含这些路径的`追踪信息`不会被`agent`发送到 `collector`.
+- 当前的路径匹配规则是 `Ant Path`匹配风格 , 例如 `/path/*`, `/path/**`, `/path/?`.
+- 将`apm-trace-ignore-plugin-x.jar`拷贝到`agent/plugins`后，重启探针即可生效
+- [Skywalking-使用可选插件 apm-trace-ignore-plugin](https://blog.csdn.net/u013095337/article/details/80452088) 有详细使用介绍
+
+
+## 如何配置路径 
+有两种配置方式，可使用任意一种，配置生效的优先级从高到低
+ 1. 在系统环境变量中配置，你需要在系统变量中添加`skywalking.trace.ignore_path`, 值是你需要忽略的路径，多个以`,`号分隔
+ 2. 将`/agent/optional-plugins/apm-trace-ignore-plugin/apm-trace-ignore-plugin.config` 复制或剪切到 `/agent/config/` 目录下，加上配置
+```
+trace.ignore_path=/your/path/1/**,/your/path/2/**
+```
+

apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml

@@ -52,6 +52,7 @@
                                 <copy file="${project.basedir}/${project.name}.config" tofile="${optional.plugin.dest.dir}/${project.name}/${project.name}.config" overwrite="true" />
                                 <!-- copy introduction -->
                                 <copy file="${project.basedir}/README.md" tofile="${optional.plugin.dest.dir}/${project.name}/README.md" overwrite="true" />
+                                <copy file="${project.basedir}/README_CN.md" tofile="${optional.plugin.dest.dir}/${project.name}/README_CN.md" overwrite="true" />
                             </tasks>
                         </configuration>
                     </execution>

docs/README.md

@@ -15,6 +15,7 @@
     * [Add your own component library settings in collector](en/Component-libraries-extend.md)
   * Incubating Features
     * [Abstract](en/Incubating/Abstract.md)
+    * [Support Custom Trace Ignore](../apm-sniffer/optional-plugins/trace-ignore-plugin/README.md)
   * Application Toolkit
     * [Overview](en/Applicaton-toolkit.md)
     * [OpenTracing Tracer](en/Opentracing.md)

docs/README_ZH.md

@@ -12,6 +12,8 @@
     * [开启TLS](cn/TLS-CN.md)
     * [命名空间隔离](cn/Namespace-CN.md)
     * [基于Token认证](cn/Token-auth-CN.md)
+  * 孵化特性
+    * [个性化服务过滤](../apm-sniffer/optional-plugins/trace-ignore-plugin/README_CN.md)
   * APM相关介绍资料
     * [OpenTracing中文版](https://github.com/opentracing-contrib/opentracing-specification-zh)
   * Application Toolkit，应用程序工具包