feat(alertmanager): Move config to secrets

manifests/prometheus/alertmanager/config.yaml

@@ -1,22 +0,0 @@
-apiVersion: monitoring.coreos.com/v1alpha1
-kind: AlertmanagerConfig
-metadata:
-  name: alertmanager-core-config
-  namespace: monitoring
-  labels:
-    alertmanagerConfig: core
-spec:
-  route:
-    groupBy: ['alertname']
-    groupWait: 30s
-    groupInterval: 5m
-    repeatInterval: 1h
-    receiver: discord
-    continue: true
-  receivers:
-  - name: discord
-    discordConfigs:
-      - apiURL: 
-          name: discord-webhook
-          key: url
-        sendResolved: true

manifests/prometheus/alertmanager/kustomization.yaml

@@ -3,5 +3,4 @@ kind: Kustomization
 
 resources:
   - alertmanager.yaml
-  - config.yaml
   - service.yaml