Create action: node-name

[Alvaro Uria]

In order to script a verification of safe removal of nova-compute units, a new action would be required.

* Action name: get-hostname
Return the hostname used to register as an hypervisor.

[Xav Paice (xavpaice)]

https://bugs.launchpad.net/juju/+bug/1918204 covers this

[Martin Kalcok (martin-kalcok)]

Since what we really need is not hostname, but name under which the nova-compute is registered in nova-cloud-controller, we renamed this action to `node-name`.

PR opened: https://review.opendev.org/c/openstack/charm-nova-compute/+/783332

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-guide/+/788298

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-guide/+/788298
Committed: https://opendev.org/openstack/charm-guide/commit/8055ad7573a4404ae87b5477731c6fb1c76435b0
Submitter: "Zuul (22348)"
Branch: master

commit 8055ad7573a4404ae87b5477731c6fb1c76435b0
Author: Aurelien Lourot <email address hidden>
Date: Tue Apr 27 15:41:56 2021 +0200

    Add nova-compute 'node-name' action to release notes

    Change-Id: I61195a001ab14c1f8e420158dc41f1faec4f7b49
    Closes-Bug: #1911012