Add display failure

.travis.yml

@@ -132,6 +132,9 @@ script:
     ## Ping the between 2 pod
   - $HOME/.local/bin/ansible-playbook -i inventory/inventory.ini -u $SSH_USER -e ansible_ssh_user=$SSH_USER $SSH_ARGS -b --become-user=root tests/testcases/030_check-network.yml $LOG_LEVEL
 
+after_failure:
+  - for a in `find /var/log/containers  -iname "*.log"`;do echo "-- $a\n\n`cat $a`\n" ;done
+
 after_script:
   - >
     $HOME/.local/bin/ansible-playbook -i inventory/inventory.ini tests/cloud_playbooks/delete-gce.yml -c local  $LOG_LEVEL