Update maven-dependency-plugin to 2.5.1 to support m2e

pom.xml

@@ -215,6 +215,11 @@
                         </execution>
                     </executions>
                 </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-dependency-plugin</artifactId>
+                    <version>2.5.1</version>
+                </plugin>
             </plugins>
         </pluginManagement>
         <plugins>