💡Use TUNNEL_TOKEN for systemd service so that TOKEN is not visible on ps

[caizixian]

Describe the feature you'd like
Per title.

Describe alternatives you've considered
Are there any alternatives to solving this problem? If so, what was your experience with them?

Additional context

cloudflared/cmd/cloudflared/linux_service.go

Line 64 in f274180

ExecStart={{ .Path }} --no-autoupdate{{ range .ExtraArgs }} {{ . }}{{ end }}

Can use Environment= directive.