[USECASE-SWUP] Disable swup usecase as nobody is maintaining it

Change-Id: I261387877bdd489e23768f2d10a457ad39286c6f
Signed-off-by: efiacor <fiachra.corcoran@est.tech>
Issue-ID: CIMAN-414
diff --git a/jjb/usecases/usecases-csit.yaml b/jjb/usecases/usecases-csit.yaml
index 0befe7b..edf34bb 100644
--- a/jjb/usecases/usecases-csit.yaml
+++ b/jjb/usecases/usecases-csit.yaml
@@ -13,7 +13,7 @@
       - 'pnf-sw-upgrade':
           trigger_jobs:
     robot-options: ''
-    cron: ''
+    disabled: 'true'
 
 - project:
     name: usecases-config-over-netconf