[java8] Fix pom.xml to properly work with Eclipse m2e

flink-java8/pom.xml

@@ -188,7 +188,7 @@ under the License.
 										</goals>
 									</pluginExecutionFilter>
 									<action>
-										<ignore></ignore>
+										<ignore/>
 									</action>
 								</pluginExecution>
 								<pluginExecution>
@@ -202,7 +202,20 @@ under the License.
 										</goals>
 									</pluginExecutionFilter>
 									<action>
-										<ignore></ignore>
+										<ignore/>
+									</action>
+								</pluginExecution>
+								<pluginExecution>
+									<pluginExecutionFilter>
+										<groupId>org.apache.maven.plugins</groupId>
+										<artifactId>maven-dependency-plugin</artifactId>
+										<versionRange>[2.9,)</versionRange>
+										<goals>
+											<goal>unpack</goal>
+										</goals>
+									</pluginExecutionFilter>
+									<action>
+										<ignore/>
 									</action>
 								</pluginExecution>
 							</pluginExecutions>