Overcloud deploy fails with OvsBridge error

Issue

• With hyperconverged compute nodes, the overcloud deploy fails.
• os-collect-config on the compute node shows the following error:

[2016/12/19 04:01:30 AM] [INFO] adding custom route for interface: eth0
Traceback (most recent call last):
  File "/bin/os-net-config", line 10, in <module>
    sys.exit(main())
  File "/usr/lib/python2.7/site-packages/os_net_config/cli.py", line 184, in main
    obj = objects.object_from_json(iface_json)
  File "/usr/lib/python2.7/site-packages/os_net_config/objects.py", line 42, in object_from_json
    return OvsBridge.from_json(json)
  File "/usr/lib/python2.7/site-packages/os_net_config/objects.py", line 428, in from_json
    name = _get_required_field(json, 'name', 'OvsBridge')
  File "/usr/lib/python2.7/site-packages/os_net_config/objects.py", line 78, in _get_required_field
    raise InvalidConfigException(msg)
os_net_config.objects.InvalidConfigException: OvsBridge JSON objects require 'name' to be configured.