Add Kubernetes manifests for Drone application including PVC, RBAC, Service, Deployment, and SealedSecret

cluster/apps/drone/drone-svc.yml

@@ -0,0 +1,14 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: drone-server-service
+  namespace: default
+spec:
+  selector:
+    app.kubernetes.io/name: drone
+  type: LoadBalancer
+  ports:
+  - port: 4338
+    targetPort: 443
+    protocol: TCP