[Bug 2038663] Please test proposed package

[Timo Aaltonen]

Hello Felipe, or anyone else affected,

Accepted magnum-ui into focal-proposed. The package will build now and
be available at https://launchpad.net/ubuntu/+source/magnum-
ui/6.0.1-0ubuntu1.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/2038663

Title:
  [SRU] no option to override the fixed_subnet when creating a new
  cluster

Status in Ubuntu Cloud Archive:
  Invalid
Status in Ubuntu Cloud Archive antelope series:
  Fix Committed
Status in Ubuntu Cloud Archive bobcat series:
  Won't Fix
Status in Ubuntu Cloud Archive ussuri series:
  New
Status in Ubuntu Cloud Archive yoga series:
  New
Status in Ubuntu Cloud Archive zed series:
  Won't Fix
Status in Magnum UI:
  Fix Released
Status in magnum-ui package in Ubuntu:
  Invalid
Status in magnum-ui source package in Focal:
  Fix Committed
Status in magnum-ui source package in Jammy:
  Fix Committed

Bug description:
  [Impact]

  When a cluster template sets fixed_network and fixed_subnet and the
  user tries to create a new cluster using that template and decides to
  override the network, the fixed_subnet will inherited from the
  template, leaving an invalid configuration and later Neutron will
  refuse to allocate a port (since the subnet doesn't belong to the
  network). For more details see
  https://bugs.launchpad.net/ubuntu/+source/magnum/+bug/2038109

  [Test Case]

  1. Deploy an OpenStack cloud with the magnum-ui extension installed.
  ```
  git clone https://opendev.org/openstack/charm-magnum-dashboard
  cd charm-magnum-dashboard
  git checkout stable/${VERSION}  # ${VERSION} can be 2023.1, yoga or ussuri.
  tox -e build
  tox -e func-target -- ${BUNDLE}  # ${BUNDLE} can be jammy-antelope, jammy-yoga or focal-ussuri
  ```

  2. Create a new cluster template with a fixed_network test-net and fixed_subnet test-subnet
  3. Create a new cluster, uncheck the option "Create new network" and pick a network different from test-net in the dropdown list.

  Expected result:

  The cluster gets created

  Actual result:

  The cluster creation fails, because the network configuration is
  invalid.

  [ Where problems could occur ]

  This is a javascript (Angular) code change, issues can be detected
  using the Web Developer Tools console where a javascript exeception
  may be raised.

  Another source of problems is that this code change adds a handler
  when populate the list of subnets when the network is changed in the
  "Fixed Network" dropdown list, if there were issues the subnet list
  would be rendered empty.

  [ Other Info ]

  - This bug fix was merged during the 2024.1 (Caracal) development cycle - https://review.opendev.org/c/openstack/magnum-ui/+/898007
  - The commit that fixes this issue is available since magnum-ui-14.0.0 - https://opendev.org/openstack/magnum-ui/commit/6f6c3db282fe2f0e08ad69c557eb153858b0164a
  - This bug fix is not relevant for upgrades, it's purely UI fix
  - This change is adding a new UI component, which on the surface may look like not suitable for a SRU, although the current UI induces users to get into a broken configuration for new clusters when overriding the cluster template's network.

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