Return True if OS name in /etc/lsb-release of host given by fabric param
    `-H` is the same as given by argument, False else.

    If arg version_id is not None only return True if it is the same as in
    /etc/lsb-release, too.

    Args:
        name: 'Debian GNU/Linux', 'Ubuntu'
        version_id(None or str): None,
                                '14.04', (Ubuntu)
                                '16.04', (Ubuntu)
                                '8', (Debian)

def is_os(name, version_id=None):
    '''Return True if OS name in /etc/lsb-release of host given by fabric param
    `-H` is the same as given by argument, False else.

    If arg version_id is not None only return True if it is the same as in
    /etc/lsb-release, too.

    Args:
        name: 'Debian GNU/Linux', 'Ubuntu'
        version_id(None or str): None,
                                '14.04', (Ubuntu)
                                '16.04', (Ubuntu)
                                '8', (Debian)
    '''
    result = False
    os_release_infos = _fetch_os_release_infos()

    if name == os_release_infos.get('name', None):

        if version_id is None:
            result = True
        elif version_id == os_release_infos.get('version_id', None):
            result = True

    return result