Summary

Some smoketest required more CPU or memory, for now, it hardcoded to 4G https://github.com/vyos/vyos-build/blob/aae746aa7b86ace255063a50e4075e2e9bef390e/scripts/check-qemu-install#L175
Add arguments cpu and memory for the check-qemu-install scripts

Use case

extended smoketests

Additional information

[Add anything you think is important for maintainers to understand your feature idea.]