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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fix_auth_url_version_prefix(auth_url):
 """Fix up the auth url if an invalid or no version prefix was given. People still give a v2 auth_url even when they specify that they want v3 authentication. Fix the URL to say v3 in this case and add version if it is missing entirely. This should be smarter and use discovery. """

    auth_url = _augment_url_with_version(auth_url)

    url_fixed = False
    if get_keystone_version() >= 3 and has_in_url_path(auth_url, ["/v2.0"]):
        url_fixed = True
        auth_url = url_path_replace(auth_url, "/v2.0", "/v3", 1)

    return auth_url, url_fixed