Fixed maintenance policy test (#584)

* Fixed maintenance policy test

* Add note to replace region in GA

Author: ezilber-akamai

test/integration/models/linode/test_linode.py

@@ -881,7 +881,8 @@ def test_delete_interface_containing_vpc(
 
 def test_create_linode_with_maintenance_policy(test_linode_client):
     client = test_linode_client
-    region = get_region(client, {"Linodes"}, site_type="core")
+    # TODO: Replace with random region after GA
+    region = "eu-central"
     label = get_test_label()
 
     policies = client.maintenance.maintenance_policies()