Sanitise all extra vars that are sent to LSO

Replace all special characters with their ASCII equivalent before they are sent to LSO to prevent Nokia having a bad time

gso/services/lso_client.py

@@ -17,6 +17,7 @@ from orchestrator.workflow import Step, StepList, begin, callback_step, conditio
 from pydantic import ConfigDict
 from pydantic_forms.types import FormGenerator
 from pydantic_forms.validators import Label, LongText, ReadOnlyField
+from unidecode import unidecode
 
 from gso import settings
 
@@ -42,6 +43,9 @@ def _send_request(parameters: dict, callback_route: str) -> None:
         parameters: JSON body for the request, which will almost always at least consist of a subscription object, and a
             boolean value to indicate a dry run.
         callback_route: The callback route that should be used to resume the workflow.
+
+    Raises:
+        HTTPError: When receiving a non-successful status code from LSO.
     """
     oss = settings.load_oss_params()
     params = oss.PROVISIONING_PROXY
@@ -106,12 +110,13 @@ def _execute_playbook(
         callback_route: The endpoint at which GSO expects a callback to continue the workflow executing this step.
         inventory: An inventory of machines at which the playbook is targeted. Must be in YAML-compatible format.
         extra_vars: Any extra variables that the playbook relies on. This can include a subscription object, a boolean
-            value indicating a dry run, a commit comment, etc.
+            value indicating a dry run, a commit comment, etc.  All unicode character values are decoded to prevent
+            sending special characters to remote machines that don't support this.
     """
     parameters = {
         "playbook_name": playbook_name,
         "inventory": inventory,
-        "extra_vars": extra_vars,
+        "extra_vars": json.loads(unidecode(json.dumps(extra_vars, ensure_ascii=False))),
     }
 
     _send_request(parameters, callback_route)