chore(hcloud-dynfw): Remove obsolete dynamic firewall

This patch removes the namespace for the OVPN firewall reconfiguration,
since switching to netbird made this obsolete.

apps/k8s01/hcloud-dynfw/cronjob.yaml

-apiVersion: batch/v1
-kind: CronJob
-metadata:
-  name: dynfw
-  namespace: hcloud-dynfw
-spec:
-  schedule: "*/15 * * * *"
-  jobTemplate:
-    spec:
-      template:
-        spec:
-          containers:
-          - name: hcloud-dynfw
-            image: quay.io/sheogorath/hcloud-dynfw:latest
-            imagePullPolicy: Always
-            resources:
-              requests:
-                cpu: 100m
-                memory: 128Mi
-              limits:
-                cpu: 100m
-                memory: 128Mi
-            envFrom:
-              - secretRef:
-                  name: hcloud-dynfw-conf
-          restartPolicy: OnFailure
-          automountServiceAccountToken: false

apps/k8s01/hcloud-dynfw/kustomization.yaml

-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-namespace: hcloud-dynfw
-resources:
-  - namespace.yaml
-  - secrets.yaml
-  - cronjob.yaml
-  - ../../../shared/resourcequotas/default.yaml

apps/k8s01/hcloud-dynfw/namespace.yaml

-apiVersion: v1
-kind: Namespace
-metadata:
-  name: hcloud-dynfw
-  labels:
-    pod-security.kubernetes.io/audit: restricted
-    pod-security.kubernetes.io/enforce: baseline
-    pod-security.kubernetes.io/warn: restricted
-    pod-security.kubernetes.io/audit-version: v1.23
-    pod-security.kubernetes.io/enforce-version: v1.23
-    pod-security.kubernetes.io/warn-version: v1.23

apps/k8s01/hcloud-dynfw/secrets.yaml

-apiVersion: v1
-kind: Secret
-metadata:
-    name: hcloud-dynfw-conf
-    namespace: hcloud-dynfw
-type: Opaque
-stringData:
-    HCLOUD_FIREWALL_ID: ENC[AES256_GCM,data:9pqYdzFR,iv:CmcFX/vDW09Io8lkkQ9xVMXwRzEzSnHQO0YMviGIgcI=,tag:Z5iTE/lMUIaScUcDZMO98g==,type:str]
-    HCLOUD_TOKEN: ENC[AES256_GCM,data:/zwa6kPuRmbFp+CEeg1dXoN1Hl3mm5oY+X6FJVswxcJRadlkDMWqAhx9PbXOASnh9xCJqJLxZq1dhXgIK66Mdw==,iv:u5MRgLgVbwimyXnahQikyH8H1uedr4ptDH7SSEGQ2vg=,tag:yKw7HRevjW/jbpfzyrHg2w==,type:str]
-sops:
-    kms: []
-    gcp_kms: []
-    azure_kv: []
-    hc_vault: []
-    age: []
-    lastmodified: "2022-03-16T02:22:07Z"
-    mac: ENC[AES256_GCM,data:HzH3Oo7ZFg2GO4ZCDQGXc2zotY4qbj4e+XeWhkdd+JI6kXdbKYLBfLo73O+SGqMSi7YVabVnQDrs5TBWh21Sa/v7nAF+B7gGLWZfyoPSIFUw9wsDVacsKM+/p3ySRlY5AfCey7d5Bs5rywPNjKLNJcm56wKfwCUMrcfHWTnST0o=,iv:4TiaPEevNWgbyDLeM/odYc7/21u+rvBFOMf6crhjVh8=,tag:zi+FPDj2yHn12ZYtIyh10g==,type:str]
-    pgp:
-        - created_at: "2022-03-16T01:58:45Z"
-          enc: |-
-            -----BEGIN PGP MESSAGE-----
-
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-            -----END PGP MESSAGE-----
-          fp: 286791FB6648539775DB31B8FCB98C2A3EC6F601
-        - created_at: "2022-03-16T01:58:45Z"
-          enc: |
-            -----BEGIN PGP MESSAGE-----
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-            -----END PGP MESSAGE-----
-          fp: B137EE1549DFAF960DD1E2B15147025FB9F09E07
-    encrypted_regex: ^(data|stringData|email|dnsZones?|dnsNames?|hosts?|tang|externalURL|.*-secret|.*-url|.*Secrets?|.*-domain|password|subjects|node|apiURL|.*(S|s)erverNames?|.*SecretKey)$
-    version: 3.7.1