Draft: [cern] Add Monitoring alert to CERN central infra

Added labels: METRICS_ALERT_MATTERMOST_HOOK METRICS_ALERT_DESTINATION_URL METRICS_ALERT_ENDPOINT_TYPE

magnum/drivers/common/templates/kubernetes/fragments/write-heat-params-master.sh

@@ -115,6 +115,8 @@ LOGGING_INSTALLER="$LOGGING_INSTALLER"
 LOGGING_CHART_TAG="$LOGGING_CHART_TAG"
 METRICS_PRODUCER="$METRICS_PRODUCER"
 METRICS_PRODUCER_VERSION="$METRICS_PRODUCER_VERSION"
+METRICS_ALERT_DESTINATION_URL="$METRICS_ALERT_DESTINATION_URL"
+METRICS_ALERT_ENDPOINT_TYPE="$METRICS_ALERT_ENDPOINT_TYPE"
 KUBE_CSI_ENABLED="$KUBE_CSI_ENABLED"
 KUBE_CSI_VERSION="$KUBE_CSI_VERSION"
 EOS_ENABLED="$EOS_ENABLED"