Make use of new callback step for external provisioning

Interaction with LSO is now completely reworked. More efficient, more faster, more better, more prettier, and will make us all rich

Depends on lso!51 (merged)

gso/services/provisioning_proxy.py

@@ -56,7 +56,7 @@ def _send_request(endpoint: str, parameters: dict, callback_route: str, operatio
     assert pp_params
 
     # Build up a callback URL of the Provisioning Proxy to return its results to.
-    callback_url = f"{oss.GENERAL.public_hostname}/api{callback_route}"
+    callback_url = f"{oss.GENERAL.public_hostname}{callback_route}"
     logger.debug(f"[provisioning proxy] Callback URL set to {callback_url}")
 
     parameters.update({"callback": callback_url})
@@ -282,7 +282,7 @@ def _show_pp_results(state: State) -> FormGenerator:
             title: str = f"Execution for {state['subscription']['product']['name']} completed."
 
         run_status: str = ReadOnlyField(state["callback_result"]["status"])
-        run_results: LongText = ReadOnlyField(json.dumps(state["callback_result"]["output"], indent=4))
+        run_results: LongText = ReadOnlyField(json.dumps(state["callback_result"], indent=4))
 
     yield ConfirmRunPage
     return state