[barbican] gerrit breach and auditing

Hi all,

I'm putting up a review spreadsheet[0] for the barbican changes since October 1st based on Julia's spreadsheet for Ironic[1].

[0]: https://docs.google.com/spreadsheets/d/1WdhxDsAZCHlzhRpcH0jKfyY2kzO2h2jRzniX... [1]: http://lists.openstack.org/pipermail/openstack-discuss/2020-October/018148.h...