command prompt is not updated correctly when switching between (stack|overcloud)rc

[Takashi Kajinami]

Description
===========
This was initially reported in https://bugzilla.redhat.com/show_bug.cgi?id=2120149 .

Since https://review.opendev.org/c/openstack/tripleo-heat-templates/+/795203 the following change was merged, $HOME/stackrc uses OS_CLOUD to display cloud name in command prompt.
On the other hand $HOME/overcloudrc still uses OS_CLOUDNAME.

The problem here is that the CLOUDPROMPT_ENABLED environment is not updated once it is set, and PS1 is not updated to point the appropriate environment.
Because of this, switching these two environments beaks the cloudname output in command prompt.

~~~
[stack@undercloud ~]$ source stackrc
(undercloud) [stack@undercloud ~]$ source overcloudrc
 [stack@undercloud ~]$
~~~

~~~
[stack@undercloud ~]$ source overcloudrc
(overcloud) [stack@undercloud ~]$ source stackrc
 [stack@undercloud ~]$
~~~

Steps to reproduce
==================
* Deploy undercloud/overcloud
* source ~/stackrc
* sourcd ~/overcloudrc

Expected result
===============
Command prompt should include (overcloud)

Actual result
=============
Command prompt does not include (overcloud)

Environment
=============
The issue was initially found in downstream product based on stable/wallaby,
but the issue affects current master as well.

Logs & Configs
==============
N/A

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/853908

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/tripleo-common/+/853911

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Takashi Kajinami <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/tripleo-heat-templates/+/853908
Reason: Let's try https://review.opendev.org/c/openstack/tripleo-common/+/853911 instead.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/tripleo-common/+/853911
Committed: https://opendev.org/openstack/tripleo-common/commit/b14ee1ac8e36c9334ce5d4ca4d238cd4a5927d0a
Submitter: "Zuul (22348)"
Branch: master

commit b14ee1ac8e36c9334ce5d4ca4d238cd4a5927d0a
Author: Takashi Kajinami <email address hidden>
Date: Mon Aug 22 14:05:02 2022 +0900

    overcloudrc: Replace OS_CLOUDNAME by OS_CLOUD

    ... to use the consistent environment in overcloudrc and stackrc.

    This also allows us to use /etc/openstack/clouds.yaml for the modern
    openstack CLI.

    Closes-Bug: #1987234
    Change-Id: If3ac25384412f02b23b6f8e5de918abac47df826

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/wallaby
Review: https://review.opendev.org/c/openstack/tripleo-common/+/855556

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tripleo-common 17.0.0 release.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/tripleo-common/+/855556
Committed: https://opendev.org/openstack/tripleo-common/commit/4fd4aff389b2b78e129125da09bc79456d296a2c
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit 4fd4aff389b2b78e129125da09bc79456d296a2c
Author: Takashi Kajinami <email address hidden>
Date: Mon Aug 22 14:05:02 2022 +0900

    overcloudrc: Replace OS_CLOUDNAME by OS_CLOUD

    ... to use the consistent environment in overcloudrc and stackrc.

    This also allows us to use /etc/openstack/clouds.yaml for the modern
    openstack CLI.

    Closes-Bug: #1987234
    Change-Id: If3ac25384412f02b23b6f8e5de918abac47df826
    (cherry picked from commit b14ee1ac8e36c9334ce5d4ca4d238cd4a5927d0a)