Revision a21440d8

b/tools/cfgupgrade
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def DowngradeInstances(config_data):
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  instances = config_data.get("instances", None)
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  if not instances:
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  if instances is None:
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    raise Error("Cannot find the 'instances' key in the configuration")
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  for (_, iobj) in instances.items():
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    if "osparams_private" in iobj:

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