Browser should never auto-fill values when editing SMTP settings

[kaiiiiiiiii]

Description:

We should not provide auto-fill values when editing SMTP settings.

Server Setup Information:

• Version of Rocket.Chat Server: 0.62.2
• Operating System: Linux
• Browser: Chrome, Safari

Steps to Reproduce:

1. Open Admin panel
2. Change to "Email" -> "SMTP"

Expected behavior:

Browser should never auto-fill username and password for me.

Actual behavior:

Browser auto-fills and I can end up changing those values by mistake.

[theorenck]

Thanks for reporting it to us @kaiiiiiiiii.