Fixed aptly URL reference for jenkins OS image builds

Change-Id: I43efa6bb5b5e6946677de09af4ab9b5e7050f5ed
diff --git a/jenkins/client/job/image/debian.yml b/jenkins/client/job/image/debian.yml
index 2c92f80..31c46b3 100644
--- a/jenkins/client/job/image/debian.yml
+++ b/jenkins/client/job/image/debian.yml
@@ -38,7 +38,7 @@
               default: ""
             UPLOAD_URL:
               type: string
-              default: "http://jenkins:eyoocaiG3ADireK3Eef8gae1roh5oox0@10.10.100.85:8088/"
+              default: "${_param:jenkins_packer_upload_url}"
             SKIP_UPLOAD:
               type: boolean
               default: "false"