feat(inputs.lustre2): support reading bulk read/write stats

[DStrand1]

Summary

Continuation of #7733

Checklist

• No AI generated code was used in this PR

Related issues

resolves #13636

[telegraf-tiger]

Download PR build artifacts for linux_amd64.tar.gz, darwin_arm64.tar.gz, and windows_amd64.zip.
Downloads for additional architectures and packages are available below.

☺️ This pull request doesn't significantly change the Telegraf binary size (less than 1%)

📦 Click here to get additional PR build artifacts

Artifact URLs

DEB	RPM	TAR GZ	ZIP
amd64.deb	aarch64.rpm	darwin_amd64.tar.gz	windows_amd64.zip
arm64.deb	armel.rpm	darwin_arm64.tar.gz	windows_arm64.zip
armel.deb	armv6hl.rpm	freebsd_amd64.tar.gz	windows_i386.zip
armhf.deb	i386.rpm	freebsd_armv7.tar.gz
i386.deb	ppc64le.rpm	freebsd_i386.tar.gz
mips.deb	riscv64.rpm	linux_amd64.tar.gz
mipsel.deb	s390x.rpm	linux_arm64.tar.gz
ppc64el.deb	x86_64.rpm	linux_armel.tar.gz
riscv64.deb		linux_armhf.tar.gz
s390x.deb		linux_i386.tar.gz
		linux_mips.tar.gz
		linux_mipsel.tar.gz
		linux_ppc64le.tar.gz
		linux_riscv64.tar.gz
		linux_s390x.tar.gz

[srebhan]

@DStrand1 thanks for the code, just one small question from my side...

[srebhan]

Wouldn't it be easier to make wantedFields a map and look-up the headerName?

[DStrand1]

I agree, I don't like the way this code is laid out currently with the field mappings and I plan to refactor it in a follow-up PR. For now I just followed how the other mappings were done, but I can refactor this here instead if you'd prefer

[srebhan]

Thanks @DStrand1!