Return a list of sysctl parameters for this minion

    CLI Example:

    .. code-block:: bash

        salt '*' sysctl.show

def show(config_file=False):
    '''
    Return a list of sysctl parameters for this minion

    CLI Example:

    .. code-block:: bash

        salt '*' sysctl.show
    '''
    cmd = 'sysctl'
    ret = {}
    out = __salt__['cmd.run_stdout'](cmd, output_loglevel='trace')
    for line in out.splitlines():
        if not line or '=' not in line:
            continue
        comps = line.split('=', 1)
        ret[comps[0]] = comps[1]
    return ret