Return information about a group

    CLI Example:

    .. code-block:: bash

        salt '*' group.info foo

def info(name):
    '''
    Return information about a group

    CLI Example:

    .. code-block:: bash

        salt '*' group.info foo
    '''
    try:
        grinfo = grp.getgrnam(name)
    except KeyError:
        return {}
    else:
        return {'name': grinfo.gr_name,
                'passwd': grinfo.gr_passwd,
                'gid': grinfo.gr_gid,
                'members': grinfo.gr_mem}