pyxcli can't be installed on python3.11+

[Eric Harney]

On python 3.11+, pyxcli can't be installed because its dependency "bunch" does not support python3.11. This affects the ibm_storage XIV driver. (bunch was last released in 2011.)

$ tox -e py311 (after adding pyxcli to test-requirements.txt)

Collecting bunch (from pyxcli>=1.1.5->-r /home/eharney/src/cinder-review23/test-requirements.txt (line 45))
  Using cached bunch-1.0.1.zip (11 kB)
  Preparing metadata (setup.py) ... error

  error: subprocess-exited-with-error

  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [7 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-install-_hb1q3r1/bunch_ca76dd7b029344f48611616a5bc47387/setup.py", line 11, in <module>
          package_file = open(join(HERE, 'bunch/__init__.py'), 'rU')
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      ValueError: invalid mode: 'rU'
      [end of output]

[Takashi Kajinami (kajinamit)]

It seems bunch hasn't get any release for 12 years... https://pypi.org/project/bunch/

Probably pyxcli needs to be updated to get rid of that dependency ? Though pyxcli itself hasn't been updated for 5 years...

[Takashi Kajinami (kajinamit)]

Maybe replacing bunch by munch is the appropriate way ? https://github.com/Infinidat/munch