Feature/nat 212 213

This PR covers NAT-212 and NAT-213.

gso/services/provisioning_proxy.py

@@ -124,6 +124,24 @@ def provision_ip_trunk(
 
     _send_request("ip_trunk", parameters, process_id, CUDOperation.POST)
 
+def check_ip_trunk(
+    subscription: IptrunkProvisioning, process_id: UUIDstr, check_name: str
+) -> None:
+    """Provision an IP trunk service using {term}`LSO`.
+
+    :param subscription: The subscription object that's to be provisioned.
+    :type subscription: {class}`IptrunkProvisioning`
+    :param process_id: The related process ID, used for callback.
+    :type process_id: UUIDstr
+    :param check_name: The name of the check to execute
+    :rtype: None
+    """
+    parameters = {
+        "subscription": json.loads(json_dumps(subscription)),
+        "check_name": check_name,
+    }
+
+    _send_request("ip_trunk/perform_check", parameters, process_id, CUDOperation.POST)
 
 def deprovision_ip_trunk(subscription: Iptrunk, process_id: UUIDstr, dry_run: bool = True) -> None:
     """Deprovision an IP trunk service using {term}`LSO`.