Create exec graph for OpenWrt

exec.js

'use strict';
'require baseclass';
return baseclass.extend({
    title: _('Exec'),
    rrdargs: function(graph, host, plugin, plugin_instance, dtype) {
        // host: Tux
        // plugin: exec
        // plugin_instance: wireguard
        // dtype: null
        var wireguard_last_handshake_time = {
            title: "%H: wireguard last handshake time",
            vlabel: "seconds",
            alt_autoscale_max: true,
            data: {
                types: ["gauge"],
                options: {
                    gauge_last_handshake_wg0: {
                        color: "ff0000",
                        // noavg: true,
                        noarea: true,
                        // overlay: true,
                        // flip: true,
                        title: "wg0"
                    },
                    gauge_last_handshake_wg1: {
                        color: "0000ff",
                        // noavg: true,
                        noarea: true,
                        title: "wg1"
                    }
                }
            }
        };
        return wireguard_last_handshake_time;
    }
});