[Bug 1660317] Fix included in openstack/nova 16.0.0.0b1

[OpenStack Infra]

This issue was fixed in the openstack/nova 16.0.0.0b1 development
milestone.

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https://bugs.launchpad.net/bugs/1660317

Title:
  NotImplementedError for detach_interface in nova-compute during
  instance deletion

Status in Ironic:
  Invalid
Status in OpenStack Compute (nova):
  Fix Released
Status in ironic package in Ubuntu:
  Invalid
Status in nova package in Ubuntu:
  Fix Released

Bug description:
  When baremetal instance deleted there is a harmless but annoying trace
  in nova-compute output.

  nova.compute.manager[26553]: INFO [instance: e265be67-9e87-44ea-95b6-641fc2dcaad8] Terminating instance [req-5f1eba69-239a-4dd4-8677-f28542b190bc 5a08515f35d749068a6327e387ca04e2 7d450ecf00d64399aeb93bc122cb6dae - - -]
  nova.compute.resource_tracker[26553]: INFO Auditing locally available compute resources for node d02c7361-5e3a-4fdf-89b5-f29b3901f0fc [req-d34e2b7b-386f-4a3c-ae85-16860a4a9c28 - - - - -]
  nova.compute.resource_tracker[26553]: INFO Final resource view: name=d02c7361-5e3a-4fdf-89b5-f29b3901f0fc phys_ram=0MB used_ram=8096MB phys_disk=0GB used_disk=480GB total_vcpus=0 used_vcpus=0 pci_stats=[] [req-d34e2b7b-386f-4a3c-ae85-16860a4a9c28 - - - - -]
  nova.compute.resource_tracker[26553]: INFO Compute_service record updated for bare-compute1:d02c7361-5e3a-4fdf-89b5-f29b3901f0fc [req-d34e2b7b-386f-4a3c-ae85-16860a4a9c28 - - - - -]
  nova.compute.manager[26553]: INFO [instance: e265be67-9e87-44ea-95b6-641fc2dcaad8] Neutron deleted interface 6b563aa7-64d3-4105-9ed5-c764fee7b536; detaching it from the instance and deleting it from the info cache [req-fdfeee26-a860-40a5-b2e3-2505973ffa75 11b95cf353f74788938f580e13b652d8 93c697ef6c2649eb9966900a8d6a73d8 - - -]
  oslo_messaging.rpc.server[26553]: ERROR Exception during message handling [req-fdfeee26-a860-40a5-b2e3-2505973ffa75 11b95cf353f74788938f580e13b652d8 93c697ef6c2649eb9966900a8d6a73d8 - - -]
  oslo_messaging.rpc.server[26553]: TRACE Traceback (most recent call last):
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 133, in _process_incoming
  oslo_messaging.rpc.server[26553]: TRACE     res = self.dispatcher.dispatch(message)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 150, in dispatch
  oslo_messaging.rpc.server[26553]: TRACE     return self._do_dispatch(endpoint, method, ctxt, args)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 121, in _do_dispatch
  oslo_messaging.rpc.server[26553]: TRACE     result = func(ctxt, **new_args)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/nova/exception_wrapper.py", line 75, in wrapped
  oslo_messaging.rpc.server[26553]: TRACE     function_name, call_dict, binary)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
  oslo_messaging.rpc.server[26553]: TRACE     self.force_reraise()
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
  oslo_messaging.rpc.server[26553]: TRACE     six.reraise(self.type_, self.value, self.tb)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/nova/exception_wrapper.py", line 66, in wrapped
  oslo_messaging.rpc.server[26553]: TRACE     return f(self, context, *args, **kw)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 6691, in external_instance_event
  oslo_messaging.rpc.server[26553]: TRACE     event.tag)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 6660, in _process_instance_vif_deleted_event
  oslo_messaging.rpc.server[26553]: TRACE     self.driver.detach_interface(instance, vif)
  oslo_messaging.rpc.server[26553]: TRACE   File "/usr/lib/python2.7/dist-packages/nova/virt/driver.py", line 524, in detach_interface
  oslo_messaging.rpc.server[26553]: TRACE     raise NotImplementedError()
  oslo_messaging.rpc.server[26553]: TRACE NotImplementedError
  oslo_messaging.rpc.server[26553]: TRACE

  
  Affected version:
  nova 14.0.3
  neutron 6.0.0
  ironic 6.2.1

  configuration for nova-compute:
  compute_driver = ironic.IronicDriver

  Ironic is configured to use neutron networks with generic switch as
  mechanism driver for ML2 pluging.

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