deploy_twamp: subscription -> json

gso/workflows/iptrunk/deploy_twamp.py

 """Workflow for adding TWAMP to an existing IP trunk."""
 
+import json
+
 from orchestrator.forms import FormPage
 from orchestrator.forms.validators import Label
 from orchestrator.targets import Target
 from orchestrator.types import FormGenerator, State, UUIDstr
+from orchestrator.utils.json import json_dumps
 from orchestrator.workflow import StepList, done, init, step, workflow
 from orchestrator.workflows.steps import resync, store_process_subscription, unsync
 from orchestrator.workflows.utils import wrap_modify_initial_input_form
@@ -38,7 +41,7 @@ def _initial_input_form_generator(subscription_id: UUIDstr) -> FormGenerator:
 def deploy_twamp_dry(subscription: Iptrunk, process_id: UUIDstr, callback_route: str, tt_number: str) -> State:
     """Perform a dry run of deploying the TWAMP session."""
     extra_vars = {
-        "subscription": subscription,
+        "subscription": json.loads(json_dumps(subscription)),
         "process_id": process_id,
         "dry_run": True,
         "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - Deploy TWAMP",
@@ -58,7 +61,7 @@ def deploy_twamp_dry(subscription: Iptrunk, process_id: UUIDstr, callback_route:
 def deploy_twamp_real(subscription: Iptrunk, process_id: UUIDstr, callback_route: str, tt_number: str) -> State:
     """Deploy the TWAMP session."""
     extra_vars = {
-        "subscription": subscription,
+        "subscription": json.loads(json_dumps(subscription)),
         "process_id": process_id,
         "dry_run": False,
         "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - Deploy TWAMP",