feat(monitoring): Add simple watchdog job for monitoring

clusters/k8s01/monitoring/watchdog-secret.yaml

+apiVersion: v1
+kind: Secret
+metadata:
+    name: watchdog
+    namespace: monitoring-system
+    labels:
+        app.kubernetes.io/name: watchdog
+stringData:
+    PK: ENC[AES256_GCM,data:wMSNTJDQnKZTHmubMJSt,iv:d/YMZ4fWHI+AqwAW8PugAqqw4vcLcpfbB7wZWVvAtFY=,tag:p44ITDni67yPQScy4ENBQg==,type:str]
+    TestID: ENC[AES256_GCM,data:3R32s6iwrg==,iv:RRKl7p9zmRVChLMNQUb//nlfkc0Ya/MCxu1fu64rfuk=,tag:8m1ekt2sKfkzOG8WuJU6XA==,type:int]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age: []
+    lastmodified: "2023-10-31T21:59:13Z"
+    mac: ENC[AES256_GCM,data:Pu4zKCHovgQn9A5rEcuifgJAyR3iTu6UwQlvW/1Jx92QnjMr5ez9AQRjUhf6GCEo0F9elPIFvVwLa4DzXGJH2CsnsQjWA0CBb+v8lVi7uMkI3eLDiolcSZ4eR09o4yLKQNzO+SXDlR8j8ebyhylSwc/W/YoRN/H6MRSS+q/0MIY=,iv:J+DQ09B0/ZZ90SOnJrhHufJ7ZElslKgeo3fxZVEe5XI=,tag:oxQa/vVsy4E94SA+KNUfPA==,type:str]
+    pgp:
+        - created_at: "2023-10-31T21:59:13Z"
+          enc: |-
+            -----BEGIN PGP MESSAGE-----
+
+            wcFMA7kpg2bgzVHcAQ//covWqPukwOoK4tXCPyJuluRE/GL8Z2qgiv2tu02kL+z2
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+            R3omwgeeoXDu0oaK7atNsAuxaZgKz1LJ4S5TP5tXTYptrA==
+            =7HD9
+            -----END PGP MESSAGE-----
+          fp: 286791FB6648539775DB31B8FCB98C2A3EC6F601
+        - created_at: "2023-10-31T21:59:13Z"
+          enc: |
+            -----BEGIN PGP MESSAGE-----
+
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+            7oiR7C0yfS+r
+            =ILNe
+            -----END PGP MESSAGE-----
+          fp: B137EE1549DFAF960DD1E2B15147025FB9F09E07
+    encrypted_regex: ^(data|stringData|email|dnsZones?|dnsNames?|.*(H|h)osts?|tang|externalURL|.*-secret|.*-url|.*Secrets?|.*-domain|password|subjects|node|apiURL|.*(S|s)erverNames?|.*SecretKey|externalName)$
+    version: 3.7.3

clusters/k8s01/monitoring/watchdog.yaml

+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: watchdog
+  namespace: monitoring-system
+  labels:
+      app.kubernetes.io/name: watchdog
+spec:
+  schedule: "*/5 * * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: watchdog
+            image: curlimages/curl:latest
+            env:
+              - name: PK
+                valueFrom:
+                  secretKeyRef:
+                    name: watchdog
+                    key: PK
+              - name: TestID
+                valueFrom:
+                  secretKeyRef:
+                    name: watchdog
+                    key: TestID
+            args:
+            - -L
+            - -v
+            - --variable '%PK'
+            - --variable '%TestID'
+            - --expand-url = "https://push.statuscake.com/?PK={{PK}}&TestID={{TestID}}&time=0"
+          restartPolicy: OnFailure
+