The charm should allow to create VMs with unique names

[Andrey Grebennikov]

nova-cloud controller should be able to set up "osapi_compute_unique_server_name_scope" parameter in nova.conf.
If not set up there is a possibility for different users to create VMs with the same names but different IPs, and it breaks DNS functionality when integrated with Designate.

[James Page (james-page)]

What's the assumption on designate usage here? that instance names need to be unique across projects? or globally for the cloud? I'm assuming that a DNS zone is designate is likely to only be associated with a single project but I may be wrong.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/660736

[Andrey Grebennikov (agrebennikov)]

James,
The options allows it to be unique globally or per-project, being a multi-value option.
We may just set the default to False, with an ability to be set to "global" or "project".

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/660736
Committed: https://git.openstack.org/cgit/openstack/charm-nova-cloud-controller/commit/?id=40282e035627a03404579f34e33714e2e35e9aeb
Submitter: Zuul
Branch: master

commit 40282e035627a03404579f34e33714e2e35e9aeb
Author: Sahid Orentino Ferdjaoui <email address hidden>
Date: Wed May 22 16:23:06 2019 +0200

    config: allow to create VMs with unique names

    This commit introduces option osapi_compute_unique_server_name_scope
    which allows operators to ensure VMs are created with unique names per
    project or cloud.

    Change-Id: Idacb60bb31cd60cb1deaec7cb3ec061f0c04da24
    Closes-Bug: #1829782
    Signed-off-by: Sahid Orentino Ferdjaoui <email address hidden>