[Bug 2039226] Fix proposed to charm-openstack-dashboard (stable/2023.2)

[OpenStack Infra]

Fix proposed to branch: stable/2023.2
Review: https://review.opendev.org/c/openstack/charm-openstack-dashboard/+/901561

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https://bugs.launchpad.net/bugs/2039226

Title:
  cannot import name 'ugettext_lazy' from 'django.utils.translation'

Status in OpenStack Dashboard Charm:
  Fix Committed
Status in OpenStack Dashboard Charm 2023.2 series:
  New
Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive bobcat series:
  Fix Committed
Status in Magnum UI:
  New
Status in watcher-dashboard:
  New
Status in magnum-ui package in Ubuntu:
  Fix Released
Status in watcher-dashboard package in Ubuntu:
  Fix Released
Status in magnum-ui source package in Mantic:
  Fix Committed
Status in watcher-dashboard source package in Mantic:
  Fix Released

Bug description:
  On Ubuntu Mantic, the dashboard fails to load and the apache error log
  shows:

  [Thu Oct 12 20:33:48.383727 2023] [wsgi:error] [pid 52899:tid 140293563209408] ERROR:root:cannot import name 'ugettext_lazy' from 'django.utils.translation' (/usr/lib/python3/dist-packages/django/utils/translation/__init__.py)
  [Thu Oct 12 20:33:48.383757 2023] [wsgi:error] [pid 52899:tid 140293563209408] Traceback (most recent call last):
  [Thu Oct 12 20:33:48.383764 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "/usr/lib/python3/dist-packages/openstack_dashboard/utils/settings.py", line 58, in import_submodules
  [Thu Oct 12 20:33:48.383769 2023] [wsgi:error] [pid 52899:tid 140293563209408]     submodule = import_module(name)
  [Thu Oct 12 20:33:48.383773 2023] [wsgi:error] [pid 52899:tid 140293563209408]                 ^^^^^^^^^^^^^^^^^^^
  [Thu Oct 12 20:33:48.383777 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "/usr/lib/python3.11/importlib/__init__.py", line 126, in import_module
  [Thu Oct 12 20:33:48.383787 2023] [wsgi:error] [pid 52899:tid 140293563209408]     return _bootstrap._gcd_import(name[level:], package, level)
  [Thu Oct 12 20:33:48.383791 2023] [wsgi:error] [pid 52899:tid 140293563209408]            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  [Thu Oct 12 20:33:48.383795 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  [Thu Oct 12 20:33:48.383799 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  [Thu Oct 12 20:33:48.383803 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  [Thu Oct 12 20:33:48.383807 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  [Thu Oct 12 20:33:48.383811 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  [Thu Oct 12 20:33:48.383814 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  [Thu Oct 12 20:33:48.383818 2023] [wsgi:error] [pid 52899:tid 140293563209408]   File "/usr/lib/python3/dist-packages/openstack_dashboard/enabled/_1370_project_container_infra_panel_group.py", line 14, in <module>
  [Thu Oct 12 20:33:48.383823 2023] [wsgi:error] [pid 52899:tid 140293563209408]     from django.utils.translation import ugettext_lazy as _

  It looks like the charm template needs updating to work with Django
  4.x in Mantic.

  See upstream commit in horizon:

  commit cd7c1b5110fe1f64cd9dfbeb1072b37912d0efee
  Author: Akihiro Motoki <amotoki at gmail.com>
  Date:   Wed Jan 26 22:42:15 2022 +0900

      Address RemovedInDjango40Warning (2)

      django.utils.translation.ugettext(), ugettext_lazy(), ugettext_noop(),
      ungettext(), and ungettext_lazy() are deprecated in favor of the
      functions that they’re aliases for: django.utils.translation.gettext(),
      gettext_lazy(), gettext_noop(), ngettext(), and ngettext_lazy().

      https://docs.djangoproject.com/en/4.0/releases/3.0/#id3

      Change-Id: I77878f84e9d10cf6a136dada81eabf4e18676250

  
  == Ubuntu SRU Details ==

  [Impact]
  magnum dashboard can't be used with Django 4.x.

  [Test Case]
  Deploy openstack with magnum + magnum-ui. Ensure dashboard is functional and no errors in /var/log/apache/error.log.

  [Regression Potential]
  This is a pretty simple change to aliased functions and regression testing mentioned above should be good enough to ensure behavior is as expected. Currently the dashboard doesn't work on Mantic where Django is at 4.2.4. This package is backported to the Bobcat cloud archive on Jammy where Django is at 3.2.12 and will need testing there, however should be fine considering these functions were deprecated in Django 3.0.

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