Add collection of ethtool queue stats

[bonnefoa]

What does this PR do?

This PR was previously applied in https://github.com/DataDog/integrations-core/pull/11056 However, this triggered segfault as the buffer's size was incorrect as _u32 element was only counted as one byte.

1 + 32 + 32 + 32 + 32 + 32 + 12 + 5
178

While the correct size should have been

4 + 32 + 32 + 32 + 32 + 32 + 12 + 5 * 4
196

A sizeof confirms it

#include <linux/ethtool.h>
#include <stdio.h>

int main (int argc, char *argv[])
{
    printf("%zu\n", sizeof(struct ethtool_drvinfo));
    return 0;
}

gcc test.c && ./a.out 
196

Motivation

This will provide per queue stats.

Additional Notes

Review checklist (to be filled by reviewers)

• [ ] Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• [ ] PR title must be written as a CHANGELOG entry (see why)
• [ ] Files changes must correspond to the primary purpose of the PR as described in the title (small unrelated changes should have their own PR)
• [ ] PR must have changelog/ and integration/ labels attached

[codecov[bot]]

Codecov Report

Merging #12023 (5d478cd) into master (54ef7cf) will increase coverage by 0.04%. The diff coverage is 95.21%.

Flag	Coverage Δ
network	84.63% <95.21%> (+6.74%)	:arrow_up:

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[github-actions[bot]]

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