Problems running openstack commands on new installation

[amanda11]

Installing the openstack pack on a new environment succeeded, but attempts to run commands such as openstack.server.list failed reporting an exception trace similar to following:

 File "/opt/stackstorm/virtualenvs/openstack/bin/openstack", line 6, in <module>
    from openstackclient.shell import main
  File "/opt/stackstorm/virtualenvs/openstack/lib/python3.6/site-packages/openstackclient/shell.py", line 24, in <module>
    from osc_lib import shell
  File "/opt/stackstorm/virtualenvs/openstack/lib/python3.6/site-packages/osc_lib/shell.py", line 24, in <module>
    from cliff import app
  File "/opt/stackstorm/virtualenvs/openstack/lib/python3.6/site-packages/cliff/app.py", line 22, in <module>
    import cmd2
  File "/opt/stackstorm/virtualenvs/openstack/lib/python3.6/site-packages/cmd2/__init__.py", line 30, in <module>
    from .cmd2 import Cmd
  File "/opt/stackstorm/virtualenvs/openstack/lib/python3.6/site-packages/cmd2/cmd2.py", line 182, in <module>
    class Cmd(cmd.Cmd):
  File "/opt/stackstorm/virtualenvs/openstack/lib/python3.6/site-packages/cmd2/cmd2.py", line 2785, in Cmd
    alias_parser = DEFAULT_ARGUMENT_PARSER(description=alias_description, epilog=alias_epilog)
  File "/opt/stackstorm/virtualenvs/openstack/lib/python3.6/site-packages/cmd2/argparse_custom.py", line 835, in __init__
    allow_abbrev=allow_abbrev)
TypeError: __init__() got an unexpected keyword argument 'allow_abbrev'
"
  stdout: ''

Investigation on what had changed, tracked it down to the problems only existed when newer version of cliff module were installed.