fixing artifact

Change-Id: I28dec9c08ccaf62295eb175b2f5f30bbb2aebc44
diff --git a/jobs.yaml b/jobs.yaml
index b76c07b..963bace 100644
--- a/jobs.yaml
+++ b/jobs.yaml
@@ -58,7 +58,7 @@
       - shell: "~mininet/mininet/util/vm/build.py -v --test sanity {flavor}"
     publishers:
       - archive:
-            artifacts: '*'
+            artifacts: '**'
       - trigger-parameterized-builds:
           - project: 'mininet-{flavor}-test'
             condition: SUCCESS