Add shade to seata (#489)

* update seata version

* update seata version

* add shade

* peak version
diff --git a/dubbo-samples-transaction/pom.xml b/dubbo-samples-transaction/pom.xml
index 9f64115..472c1ad 100644
--- a/dubbo-samples-transaction/pom.xml
+++ b/dubbo-samples-transaction/pom.xml
@@ -143,6 +143,19 @@
                     <target>${target.level}</target>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>2.4.1</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>