upgrade jdeb plugin to 1.8 (alibaba#885)

Author: sjha2048

packaging/pom.xml

@@ -46,7 +46,7 @@
                     <plugin>
                         <artifactId>jdeb</artifactId>
                         <groupId>org.vafer</groupId>
-                        <version>1.7</version>
+                        <version>1.8</version>
                         <executions>
                             <execution>
                                 <phase>package</phase>