Merge "Make common->compute->shelve_server param more clear"
diff --git a/tempest/common/compute.py b/tempest/common/compute.py
index 318eb10..64543fb 100644
--- a/tempest/common/compute.py
+++ b/tempest/common/compute.py
@@ -169,27 +169,28 @@
     return body, servers
 
 
-def shelve_server(client, server_id, force_shelve_offload=False):
+def shelve_server(servers_client, server_id, force_shelve_offload=False):
     """Common wrapper utility to shelve server.
 
     This method is a common wrapper to make server in 'SHELVED'
     or 'SHELVED_OFFLOADED' state.
 
+    :param servers_clients: Compute servers client instance.
     :param server_id: Server to make in shelve state
     :param force_shelve_offload: Forcefully offload shelve server if it
                                  is configured not to offload server
                                  automatically after offload time.
     """
-    client.shelve_server(server_id)
+    servers_client.shelve_server(server_id)
 
     offload_time = CONF.compute.shelved_offload_time
     if offload_time >= 0:
-        waiters.wait_for_server_status(client, server_id,
+        waiters.wait_for_server_status(servers_client, server_id,
                                        'SHELVED_OFFLOADED',
                                        extra_timeout=offload_time)
     else:
-        waiters.wait_for_server_status(client, server_id, 'SHELVED')
+        waiters.wait_for_server_status(servers_client, server_id, 'SHELVED')
         if force_shelve_offload:
-            client.shelve_offload_server(server_id)
-            waiters.wait_for_server_status(client, server_id,
+            servers_client.shelve_offload_server(server_id)
+            waiters.wait_for_server_status(servers_client, server_id,
                                            'SHELVED_OFFLOADED')