old_contents: # Copyright 2018 Ericsson
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # trait prefixes to be used after CUSTOM_
  TRAIT_PREFIX_VNIC_TYPE = 'VNIC_TYPE_'
  TRAIT_PREFIX_PHYSNET = 'PHYSNET_'
  
  # resource classes
  CLASS_NET_BW_EGRESS_KBPS = 'NET_BW_EGR_KILOBIT_PER_SEC'
  CLASS_NET_BW_INGRESS_KBPS = 'NET_BW_IGR_KILOBIT_PER_SEC'
  
  # Optionally reported inventory parameters. Mandatory parameters like 'total'
  # are left out intentionally. See also:
  # https://docs.openstack.org/api-ref/placement
  #        /#update-resource-provider-inventory
  INVENTORY_OPTIONS = set([
      'allocation_ratio',
      'max_unit',
      'min_unit',
      'reserved',
      'step_size',
      ])
  
new_contents: # Copyright 2018 Ericsson
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # trait prefixes to be used after CUSTOM_
  TRAIT_PREFIX_VNIC_TYPE = 'VNIC_TYPE_'
  TRAIT_PREFIX_PHYSNET = 'PHYSNET_'
  
  # TODO(przszc): Remove resource classes constants with next major release of
  # neutron-lib. There were only a few occurrences in neutron source code where
  # those constants were used, and all of them were replaced with
  # os-resource-classes lib.
  # **DEPRECATED** resource classes
  CLASS_NET_BW_EGRESS_KBPS = 'NET_BW_EGR_KILOBIT_PER_SEC'
  CLASS_NET_BW_INGRESS_KBPS = 'NET_BW_IGR_KILOBIT_PER_SEC'
  
  # Optionally reported inventory parameters. Mandatory parameters like 'total'
  # are left out intentionally. See also:
  # https://docs.openstack.org/api-ref/placement
  #        /#update-resource-provider-inventory
  INVENTORY_OPTIONS = set([
      'allocation_ratio',
      'max_unit',
      'min_unit',
      'reserved',
      'step_size',
      ])
  
subject: Add a TODO note for resource classes constants