Disabling failing and unsupported jobs

Change-Id: I60590b77e3ed4e447ed557c1ba5f9257d7dfb90f
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 c9e70d8..0befe7b 100644
--- a/jjb/usecases/usecases-csit.yaml
+++ b/jjb/usecases/usecases-csit.yaml
@@ -13,6 +13,7 @@
       - 'pnf-sw-upgrade':
           trigger_jobs:
     robot-options: ''
+    cron: ''
 
 - project:
     name: usecases-config-over-netconf