Merge "check_create must return valid dict or None" into R2.22-dev

src/config/schema-transformer/to_bgp.py

@@ -1613,7 +1613,7 @@ def check_create(self):
                         if ip_addr is None:
                             self.log_error("No ip address found for interface "
                                            + interface_name)
-                            return False
+                            return None
                     vmi_info = {'vmi': interface, 'address': ip_addr}
                     vm_info[interface.service_interface_type] = vmi_info