staging: Add extra volume configuration for the pathslicing objstorage

Refs. swh/infra/sysadm-environment#5164

swh/templates/objstorage/_helper_deployment.yaml

@@ -128,6 +128,10 @@ spec:
           volumeMounts:
           - name: configuration
             mountPath: /etc/swh
+          {{ range $volume_name, $volume_config := .configuration.volumes }}
+          - name: {{ $volume_name }}
+            mountPath: {{ $volume_config.mountPath }}
+          {{ end }}
       volumes:
       - name: configuration
         emptyDir: {}
@@ -137,4 +141,9 @@ spec:
           items:
           - key: "config.yml.template"
             path: "config.yml.template"
+      {{ range $volume_name, $volume_config := .configuration.volumes }}
+      - name: {{ $volume_name }}
+        persistentVolumeClaim:
+          claimName: {{ $volume_config.persistentVolumeClaim }}
+      {{ end }}
 {{- end -}}

swh/values/staging/swh-cassandra.yaml

@@ -851,6 +851,12 @@ objstorage:
         minReplicaCount: 2
         maxReplicaCount: 10
         cpuPercentageUsage: 100
+      volumes:
+        staging-pathslicing-pv:
+          # See k8s-cluster-config for such pvc declaration
+          persistentVolumeClaim: staging-pathslicing-pv-claim
+          mountPath: /srv/softwareheritage/objects
+
       # mandatory
       # check readWriteStorageConfiguration example to configure your storage
       objstorageConfigurationRef: readWriteObjstorageConfiguration