Making ssh command run non-blocking

[gyuho]

avalanche-ops/avalancheup-aws/src/apply/mod.rs

Lines 1441 to 1453 in 1631a68

	for ssh_command in ssh_commands.iter() {
	match ssh_command.run("tail -10 /var/log/cloud-init-output.log") {
	Ok(output) => {
	println!(
	"{} (anchor node) init script std output:\n{}\n",
	ssh_command.instance_id, output.stdout
	);
	println!(
	"{} (anchor node) init script std err:\n{}\n",
	ssh_command.instance_id, output.stderr
	);
	}
	Err(e) => log::warn!("failed to run ssh command {}", e),

this can block forever if VPC security group has wrong IP for SSH 22 port ingress traffic.

We should either automatically fix the VPC security group or make this non-blocking (just warn after 10-second)

[exdx]

I believe the referenced PR addressed this particular issue and we can close?