Update pom.xml

明确打包方式，防止部分文件丢失

samples/micro-profile-sureness/pom.xml

@@ -8,7 +8,7 @@
         <version>1.0.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
-
+    <packaging>war</packaging>
     <artifactId>micro-profile-sureness</artifactId>
 
     <properties>
@@ -90,4 +90,4 @@
             </repositories>
         </profile>
     </profiles>
-</project>
\ No newline at end of file
+</project>