'Determine if we are the definitive auth
Determines if we are the definitive auth for a given path.
If the account name is prefixed with something matching one
of the reseller_prefix items, then we are the auth (return True)
Non-matching: we are not the auth.
However, one of the reseller_prefix items can be blank. If
so, we cannot always be definite so return False.
:param path: A path (e.g., /v1/AUTH_joesaccount/c/o)
:return:True if we are definitive auth'

def _is_definitive_auth(self, path):

    try:
        (version, account, rest) = split_path(path, 1, 3, True)
    except ValueError:
        return False
    if account:
        return bool(self._get_account_prefix(account))
    return False
