Failed when using doc tools to update Data Processing service options

[Chason Chan]

I run the following command to update Compute service options:

# ./diff_branches.py stable/newton stable/ocata sahara

It failed with this output:

Working on sahara (stable/newton)
Could not load oslo.service
Working on sahara (stable/ocata)
Traceback (most recent call last):
  File "/root/openstack-doc-tools/autogenerate_config_docs/autohelp.py", line 636, in <module>
    main()
  File "/root/openstack-doc-tools/autogenerate_config_docs/autohelp.py", line 614, in main
    import_modules(base_path, package_name, verbose=args.verbose)
  File "/root/openstack-doc-tools/autogenerate_config_docs/autohelp.py", line 108, in import_modules
    module = importlib.import_module(modname)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/root/openstack-doc-tools/autogenerate_config_docs/sources/sahara/sahara/cli/image_pack/api.py", line 24, in <module>
    raise Exception(_LE("The image packing API depends on the system package "
Exception: The image packing API depends on the system package python-libguestfs (and libguestfs itself.) Please install these packages to proceed.
Traceback (most recent call last):
  File "./diff_branches.py", line 306, in <module>
    sys.exit(main())
  File "./diff_branches.py", line 283, in main
    new_list = get_options(project, args.new_branch)
  File "./diff_branches.py", line 91, in get_options
    'PATH': path})
  File "/usr/lib/python2.7/subprocess.py", line 574, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['./autohelp-wrapper', '-q', '-b', 'stable/ocata', '-e', 'venv/stable_ocata', 'dump', 'sahara']' returned non-zero exit status 1

[Petr Kovar (pmkovar)]

For me, it fails due to a missing openstack.common.apiclient, but can confirm it's broken.