Use -f--proto '=https --tlsv1.2' for curl commands

[svrnm]

I think we should use -f to fail clearly on 404s. It also seems like a good idea to add --proto '=https --tlsv1.2 to force curl to use HTTPS with TLS v1.2 for increased security (these options are used by e.g. the Rust official install instructions so I assume they are widely supported).

So on this particular line the curl invocation could be rewritten as:

curl --proto '=https' --tlsv1.2 -fOL https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/v{{% param collectorVersion %}}/otelcol_{{% param collectorVersion %}}_linux_386.tar.gz

Originally posted by @mx-psi in #2626 (comment)