Reduce artifacts TTL to 60 days

$ du -d1 -h /var/jenkins_home
240+GB

We do not need all artifacts to be stored at jenkins.

Change-Id: I037d677b7ec448ba259707895919851fe4ed734a
diff --git a/jobs/templates/download-config-drive.yml b/jobs/templates/download-config-drive.yml
index 74bd001..94269ec 100644
--- a/jobs/templates/download-config-drive.yml
+++ b/jobs/templates/download-config-drive.yml
@@ -105,8 +105,9 @@
 
       }}
     name: download-config-drive
-    logrotate:
-      daysToKeep: 365
+    build-discarder:
+      days-to-keep: 365
+      artifact-days-to-keep: 60
     parameters:
     - string:
         default: ''