Show maven dependency information for debugging

Change-Id: I761772b1cc3653b4da97f63f451032a612e4213c
diff --git a/jjb/maven.yaml b/jjb/maven.yaml
index 02195e3..785dd0f 100644
--- a/jjb/maven.yaml
+++ b/jjb/maven.yaml
@@ -12,7 +12,7 @@
     project-type: maven
     maven:
       root-pom: pom.xml
-      goals: 'clean install'
+      goals: 'dependency:tree clean install'
 
     parameters:
       - string: