Mount opencloud-config ConfigMap to /etc/opencloud

Added volume mount for opencloud-config ConfigMap at /etc/opencloud
so OpenCloud services can read the opencloud.yaml configuration file.

This follows OpenCloud's standard configuration pattern:
- opencloud.yaml provides global defaults
- Environment variables override file configuration
- ConfigMap mounted at /etc/opencloud (container default)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

apps/opencloud/opencloud-deployment.yaml

@@ -448,6 +448,8 @@ spec:
         volumeMounts:
         - name: opencloud-data
           mountPath: /var/lib/opencloud
+        - name: opencloud-config
+          mountPath: /etc/opencloud
         resources:
           requests:
             memory: "512Mi"
@@ -474,6 +476,9 @@ spec:
       - name: opencloud-data
         persistentVolumeClaim:
           claimName: opencloud-data
+      - name: opencloud-config
+        configMap:
+          name: opencloud-config
 ---
 # Ingress
 apiVersion: networking.k8s.io/v1