update workflow targets

make import workflows have a CREATE target instead of SYSTEM, which is reserved for validation workflows

gso/workflows/tasks/import_iptrunk.py

@@ -91,7 +91,7 @@ def update_ipam_stub_for_subscription(
 @workflow(
     "Import iptrunk",
     initial_input_form=initial_input_form_generator,
-    target=Target.SYSTEM,
+    target=Target.CREATE,
 )
 def import_iptrunk() -> StepList:
     """Import an IP trunk without provisioning it."""