lso result step title is now always the name of the provisioning step

the optional label remains, if found to be useful at a later point in time.

Also renamed provisioning proxy to LSO client

docs/source/module/services/index.rst

@@ -15,6 +15,6 @@ Submodules
    crm
    infoblox
    librenms_client
+   lso_client
    netbox_client
-   provisioning_proxy
    subscriptions