add checkboxes to iptrunk termination workflow that allow for skipping IPAM and/or config steps

gso/workflows/iptrunk/terminate_iptrunk.py

-# noinspection PyProtectedMember
 import ipaddress
 
 from orchestrator.forms import FormPage
 from orchestrator.forms.validators import Label
 from orchestrator.targets import Target
 from orchestrator.types import FormGenerator, State, SubscriptionLifecycle, UUIDstr
-from orchestrator.workflow import StepList, done, init, step, workflow
+from orchestrator.workflow import StepList, conditional, done, init, step, workflow
 from orchestrator.workflows.steps import resync, set_status, store_process_subscription, unsync
 from orchestrator.workflows.utils import wrap_modify_initial_input_form
 
@@ -15,17 +14,21 @@ from gso.services.ipam import V4ServiceNetwork, V6ServiceNetwork
 from gso.services.provisioning_proxy import pp_interaction
 
 
-def initial_input_form_generator(subscription_id: UUIDstr) -> FormGenerator:
-    subscription = Iptrunk.from_subscription(subscription_id)
-
+def initial_input_form_generator() -> FormGenerator:
     class TerminateForm(FormPage):
-        are_you_sure: Label = f"Are you sure you want to remove {subscription.description}?"  # type: ignore
+        termination_label: Label = (
+            "Please confirm whether configuration should get removed from the A and B sides of the trunk, and whether "
+            "IPAM resources should be released."  # type: ignore
+        )
+        remove_configuration: bool = True
+        clean_up_ipam: bool = True
 
-    return TerminateForm  # type: ignore
+    user_input = yield TerminateForm
+    return user_input.dict()
 
 
 @step("Set iptrunk ISIS metric to 9000")
-def modify_iptrunk_subscription(subscription: Iptrunk) -> State:
+def update_isis_metric(subscription: Iptrunk) -> State:
     subscription.iptrunk.iptrunk_isis_metric = 9000
 
     return {"subscription": subscription}
@@ -87,15 +90,23 @@ def deprovision_ip_trunk_ipv6(subscription: Iptrunk) -> dict[str, V4ServiceNetwo
     target=Target.TERMINATE,
 )
 def terminate_iptrunk() -> StepList:
+    run_config_steps = conditional(lambda state: state.get("remove_configuration", True))
+    run_ipam_steps = conditional(lambda state: state.get("clean_up_ipam", True))
+
+    config_steps = (
+        StepList([update_isis_metric])
+        >> pp_interaction(drain_traffic_from_ip_trunk, 3)
+        >> pp_interaction(deprovision_ip_trunk_dry, 3)
+        >> pp_interaction(deprovision_ip_trunk_real, 3)
+    )
+    ipam_steps = StepList([deprovision_ip_trunk_ipv4, deprovision_ip_trunk_ipv6])
+
     return (
         init
         >> store_process_subscription(Target.TERMINATE)
         >> unsync
-        >> modify_iptrunk_subscription
-        >> pp_interaction(drain_traffic_from_ip_trunk, 3)
-        >> pp_interaction(deprovision_ip_trunk_dry, 3)
-        >> deprovision_ip_trunk_ipv4
-        >> deprovision_ip_trunk_ipv6
+        >> run_config_steps(config_steps)
+        >> run_ipam_steps(ipam_steps)
         >> set_status(SubscriptionLifecycle.TERMINATED)
         >> resync
         >> done