REFACTOR(repo): move vault/ to manifests/

- Move ExternalSecret files from vault/ to manifests/secret.yaml
- Update kustomization.yaml references
- Remove vault/ folders

Apps: alertmanager, grafana, prometheus

alertmanager/manifests/secret.yaml

@@ -0,0 +1,85 @@
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: alertmanager-smtp
+  namespace: alertmanager
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    kind: ClusterSecretStore
+    name: vault-backend
+  target:
+    name: alertmanager-smtp
+    creationPolicy: Owner
+  data:
+    - secretKey: smtp_auth_password
+      remoteRef:
+        key: monitoring/alertmanager
+        property: SMTP_PASSWORD
+---
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: alertmanager-config
+  namespace: alertmanager
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    kind: ClusterSecretStore
+    name: vault-backend
+  target:
+    name: alertmanager-config
+    creationPolicy: Owner
+    template:
+      engineVersion: v2
+      data:
+        alertmanager.yml: |
+          global:
+            resolve_timeout: 5m
+            smtp_smarthost: "smtp.mail.me.com:587"
+            smtp_from: "bluemayne0213@icloud.com"
+            smtp_auth_username: "bluemayne0213@icloud.com"
+            smtp_auth_password: "{{ .smtp_password }}"
+            smtp_require_tls: true
+          route:
+            group_by: ["alertname", "cluster", "service"]
+            group_wait: 30s
+            group_interval: 5m
+            repeat_interval: 4h
+            receiver: "email"
+            routes:
+            - match:
+                alertname: Watchdog
+              receiver: "null"
+            - match:
+                alertname: InfoInhibitor
+              receiver: "null"
+            - match:
+                severity: critical
+              receiver: "email"
+              group_wait: 10s
+              repeat_interval: 1h
+            - match:
+                severity: warning
+              receiver: "email"
+              group_wait: 1m
+              repeat_interval: 4h
+          receivers:
+          - name: "email"
+            email_configs:
+            - to: "bluemayne0213@icloud.com"
+              send_resolved: true
+              headers:
+                subject: "[{{ "{{" }} .Status | toUpper {{ "}}" }}] {{ "{{" }} .CommonLabels.alertname {{ "}}" }}"
+          - name: "null"
+          inhibit_rules:
+          - source_match:
+              severity: "critical"
+            target_match:
+              severity: "warning"
+            equal: ["alertname", "cluster", "service"]
+  data:
+    - secretKey: smtp_password
+      remoteRef:
+        key: monitoring/alertmanager
+        property: SMTP_PASSWORD