Function build_qemu_command 

pub fn build_qemu_command(
    binary: &Path,
    config: &PetriVmConfig,
    qemu_config: &QemuPetriConfig,
    host_pipette_port: u16,
    prebuilt_initrd: &PetriInitrd,
) -> Result<Command>

Build the QEMU command line for a TCG launch.