feature：增加obs归集方式 (#90)

* feature：实现通过datax进行obs归集的插件

* feature：前端增加obs归集时的前缀参数

runtime/datax/obsreader/src/main/assembly/package.xml

@@ -0,0 +1,35 @@
+<assembly
+        xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+    <id></id>
+    <formats>
+        <format>dir</format>
+    </formats>
+    <includeBaseDirectory>false</includeBaseDirectory>
+    <fileSets>
+        <fileSet>
+            <directory>src/main/resources</directory>
+            <includes>
+                <include>plugin.json</include>
+                <include>plugin_job_template.json</include>
+            </includes>
+            <outputDirectory>plugin/reader/obsreader</outputDirectory>
+        </fileSet>
+        <fileSet>
+            <directory>target/</directory>
+            <includes>
+                <include>obsreader-0.0.1-SNAPSHOT.jar</include>
+            </includes>
+            <outputDirectory>plugin/reader/obsreader</outputDirectory>
+        </fileSet>
+    </fileSets>
+
+    <dependencySets>
+        <dependencySet>
+            <useProjectArtifact>false</useProjectArtifact>
+            <outputDirectory>plugin/reader/obsreader/libs</outputDirectory>
+            <scope>runtime</scope>
+        </dependencySet>
+    </dependencySets>
+</assembly>