add tomcat8 maven plugin to plugins element

pom.xml

@@ -82,15 +82,6 @@
         <directory>src/main/resources</directory>
       </resource>
     </resources>
-    <pluginManagement>
-      <plugins>
-        <plugin>
-          <groupId>org.codelibs</groupId>
-          <artifactId>tomcat8-maven-plugin</artifactId>
-          <version>3.0-SNAPSHOT</version>
-        </plugin>
-      </plugins>
-    </pluginManagement>
     <plugins>
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
@@ -203,6 +194,11 @@
           </excludes>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.codelibs</groupId>
+        <artifactId>tomcat8-maven-plugin</artifactId>
+        <version>3.0-SNAPSHOT</version>
+      </plugin>
     </plugins>
   </build>
   <pluginRepositories>