get details about a machine
    :param name: name given to the machine
    :param call: call value in this case is 'action'
    :return: machine information

    CLI Example:

    .. code-block:: bash

        salt-cloud -a show_instance vm_name

def show_instance(name, call=None):
    '''
    get details about a machine
    :param name: name given to the machine
    :param call: call value in this case is 'action'
    :return: machine information

    CLI Example:

    .. code-block:: bash

        salt-cloud -a show_instance vm_name
    '''
    node = get_node(name)
    ret = query(command='my/machines/{0}'.format(node['id']),
                location=node['location'], method='GET')

    return ret