copr: list also IBM Cloud volumes

Unused and forgotten volumes are starting to pile up in the IBM
Cloud. We need to list them in this script the same way we do it in
`libvirt-list'.

roles/copr/backend/templates/resalloc/ibm-cloud-list-vms.j2

@@ -11,6 +11,7 @@ from ibm_cloud_sdk_core.authenticators import IAMAuthenticator
 
 DEFAULT_TOKEN_FILE = "{{ ibmcloud_token_file }}"
 SERVICE_URL = "https://jp-tok.iaas.cloud.ibm.com/v1"
+LIMIT = 100
 
 
 def _get_arg_parser():
@@ -36,13 +37,29 @@ def _main():
     service = VpcV1(now.strftime('%Y-%m-%d'), authenticator=authenticator)
     service.set_service_url(SERVICE_URL)
 
-    resp = service.list_instances()
-    for server in resp.result["instances"]:
+    # Gather the list of all resources here
+    resources = set()
+
+    instances = service.list_instances(limit=LIMIT).result["instances"]
+    for server in instances:
         # Resalloc works with underscores, which is not allowed in IBM Cloud
         name = server["name"].replace("-", "_")
         if name.startswith(pool_id):
-            # The only stdout output comes here!
-            print(name)
+            resources.add(name)
+
+    volumes = service.list_volumes(limit=LIMIT).result["volumes"]
+    for volume in volumes:
+        # Resalloc works with underscores, which is not allowed in IBM Cloud
+        name = volume["name"].replace("-", "_")
+        if name.startswith(pool_id):
+            name = name.rsplit("_", 1)[0]
+            resources.add(name)
+
+    # Print them out, so upper level tooling can work with the list
+    for name in resources:
+        # The only stdout output comes here!
+        print(name)
+
 
 if __name__ == "__main__":
     sys.exit(_main())