feat(electron-test): move third hosted broker to self hosted broker

[MaximoLiberata]

electron tests may present connection issues when try to connect to third hosted broker. The tests will fail for external issues not related to MQTT.JS. A self hosted broker will mitigate these issues.

[MaximoLiberata]

@axi92 Could you review this PR, too?

[robertsLando]

I higly suggest to use aedes-cli instead:

MQTT.js/web-test-runner.config.mjs

Lines 8 to 16 in 2f8e739

	await start({
	protos: ['tcp', 'tls', 'ws', 'wss'],
	wsPort,
	wssPort,
	key: './test/certs/server-key.pem',
	cert: './test/certs/server-cert.pem',
	verbose: true,
	stats: false
	})

[MaximoLiberata]

@robertsLando I have a question, the ServerLauncher class/service is launched before each test starts. So far, the electron tests didn't fail, but I'm not sure if they will fail because duplicate server ports like node test issues.

Is there a way to close aedes-cli broker? I saw its documentation, but I didn't find a method to close it

[robertsLando]

@MaximoLiberata start returns servers, broker instances so yeah you can close them:

https://github.com/moscajs/aedes-cli/blob/master/lib/cli.js#L420

[MaximoLiberata]

Thanks @robertsLando

[robertsLando]

@MaximoLiberata Sorry for the late review but I'm on holiday, I will be back on the end of August :)

[robertsLando]

Just came back from holidays, sorry for the late review! Everything looks good to me, just remove the useless option and I will merge this, thanks 🙏🏼

[MaximoLiberata]

thanks @robertsLando and @axi92 for review 🙏🏼