所有子模块都要执行的checkstyle检查

<!--                所有子模块都要执行的checkstyle检查 -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
<!--            运行checkstyle检查        mvn checkstyle:checkstyle-->
                    <artifactId>maven-checkstyle-plugin</artifactId>
                    <version>2.17</version>
                    <configuration>
                        <configLocation>checkstyle.xml</configLocation>
                        <suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
                        <!--
                           <configLocation>/google_checks.xml</configLocation>
                         -->
                        <failOnViolation>true</failOnViolation>
                        <consoleOutput>true</consoleOutput>
                    </configuration>
                    <executions>
                        <execution>
                            <phase>validate</phase>
                            <goals>
                                <goal>check</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>