[fix] fix junit version

Author: TimmyYu

core/client.pom.xml

@@ -62,13 +62,13 @@
             <artifactId>zipkin-sender-urlconnection</artifactId>
             <version>${zipkin-reporter.version}</version>
         </dependency>
-		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<version>4.8.2</version>
-			<scope>test</scope>
-		</dependency>
-	</dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${maven_junit_version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
     <build>
         <plugins>

core/pom.xml

@@ -24,7 +24,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.8.2</version>
+            <version>${maven_junit_version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>

core/server.pom.xml

@@ -21,6 +21,12 @@
     </properties>
 
     <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${maven_junit_version}</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>com.tencent.tars</groupId>
             <artifactId>tars-client</artifactId>

pom.xml

@@ -46,7 +46,7 @@
         <module>tools</module>
         <module>protobuf</module>
         <module>spring</module>
-<!--        <module>tars-plugins</module>-->
+        <!--        <module>tars-plugins</module>-->
     </modules>
 
     <properties>
@@ -62,6 +62,7 @@
         <maven_install_plugin_version>2.5.2</maven_install_plugin_version>
         <maven_deploy_plugin_version>2.8.2</maven_deploy_plugin_version>
         <maven_release_plugin_version>2.5.3</maven_release_plugin_version>
+        <maven_junit_version>4.8.2</maven_junit_version>
     </properties>
 
     <build>