Thanks for the bug and also proposing a change. You can get some eyes on
your proposed change by asking about it in the #openstack-bifrost
channel on IRC (if you haven't already). I personally think it LGTM.
On the change, instead of "Bug #2103448: ",  use 'Closes-Bug: #2103448'
so that it directly references this report and gets automatically
tracked and closed by the bot once resolved.
** Changed in: bifrost
       Status: New => Triaged
** Changed in: bifrost
   Importance: Undecided => Medium
** Changed in: bifrost
     Assignee: (unassigned) => Dominic Dumrauf (dumrauf)
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https://bugs.launchpad.net/bugs/2103448
Title:
  Extending `hosts` to also accept new `target_hosts` variable
Status in Bifrost:
  Triaged
Bug description:
  Many thanks for providing a single `install.yaml` playbook which
  installs `bifrost` in one go. Great work!
  It seems the hosts are fixed to target in the playbook. Would it be
  possible to make the playbook work with other inventories by
  introducing a new variable `target_hosts` as in PR
  
https://review.opendev.org/c/openstack/bifrost/+/944810 ? The proposed
  change should be backwards compatible.
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