feat(cert-checker): add Kubernetes resources for certificate checking functionality

- Implemented a new module for cert-checker with Kubernetes resources including ServiceAccount, Role, RoleBinding, ConfigMap, and CronJob.
- Added Python script to check certificate expiry and restart deployments if necessary.
- Configured environment variables for deployment name, namespace, and service details.
- Included requirements for the Python environment.

feat(devolo-exporter): introduce Devolo exporter for Prometheus metrics

- Created a new module for Devolo exporter with Kubernetes resources including ServiceAccount, ConfigMap, Deployment, and Service.
- Developed Python scripts to scrape metrics from Devolo devices and expose them to Prometheus.
- Configured environment variables for Devolo device IP, model, and ports.
- Added requirements for the Python environment.

terraform/apps/dev-01/resources/prometheus.yml

@@ -21,3 +21,9 @@ scrape_configs:
           - "disk-exporter.prometheus.svc.cluster.local:9100"
       - labels:
           cluster: "dev-01"
+  - job_name: devolo-exporter
+    scrape_interval: 10s
+    static_configs:
+      - targets:
+          - "devolo-exporter-620.prometheus.svc.cluster.local:9100"
+          # - "devolo-exporter-326.prometheus.svc.cluster.local:9100"