ROX-34459: fix scanner restart noise (#339)

* fix scanner restart noise

* pinning grafana linter, because go install broke

Author: johannes94

resources/prometheus/prometheus-rules.yaml

@@ -72,7 +72,7 @@ spec:
             sop_url: "https://gitlab.cee.redhat.com/stackrox/acs-managed-service-runbooks/blob/master/sops/dp-003-rhacs-instance-unavailable.md"
         - alert: RHACSScannerContainerFrequentlyRestarting
           expr: |
-            increase(kube_pod_container_status_restarts_total{pod=~"scanner.*", container=~"scanner|db|matcher|indexer"}[30m]) > 4
+            changes(kube_pod_container_status_restarts_total{pod=~"scanner.*", container=~"scanner|db|matcher|indexer"}[30m]) > 4
           labels:
             severity: warning
           annotations:

scripts/lint-grafana.sh

@@ -3,7 +3,9 @@
 set -eu
 
 if ! [ -x "$(command -v dashboard-lint)" ]; then
-	go install github.com/grafana/dashboard-linter@latest
+	# using this specific commit as linter installation via go install broke
+	# because grafana started to use replace directive in their go.mod which does not support go install anymore
+	go install github.com/grafana/dashboard-linter@a088406
 fi
 
 ! [ -x "$(command -v yq)" ] && echo 'yq not installed, the hook requires it.' && exit 1