opentelemetry-collector.convertMemToMib produces 0 if using a decimal point

[snuggie12]

This is fairly easily worked around, but it did cause our HPAs to max out so figured I'd make the ticket in case anyone else runs into it.

We had a memory limit of 1.5Gi in place and the atoi function will convert that to 0. This is especially bad with GOMEMLIMIT since it out of nowhere started using 100% of the CPU.

[TylerHelmuth]

You're not wrong, but also I don't have a great solution in mind for this other than don't use decimals. Maybe open-telemetry/opentelemetry-collector-contrib#30289 can help