onap: Run ONAP deployments once a day

Tests in Frankfurt region completed so the job can be run
less frequently - once a day as before.

Change-Id: Ie0d277b37f749f8c0031a8490ce2ddc9f9f9280d
diff --git a/jjb/cloud-infra/cloud-infra-periodic-onap.yaml b/jjb/cloud-infra/cloud-infra-periodic-onap.yaml
index 85b0485..7818e05 100644
--- a/jjb/cloud-infra/cloud-infra-periodic-onap.yaml
+++ b/jjb/cloud-infra/cloud-infra-periodic-onap.yaml
@@ -32,7 +32,7 @@
       - city:
           slave-label: 'city-jumphost-ubuntu1804'
           openrc-credentials-file: 'est-jenkins-openrcfile-city-frankfurt-onap'
-          daily-trigger: 'H */4 * * 6-7'
+          daily-trigger: '@midnight'
       - xerces:
           slave-label: 'xerces-jumphost-ubuntu1804'
           openrc-credentials-file: 'est-estinfra-openrcfile-xerces-lund-onap'