[receiver/kubeletstats] Collect network metrics from all interfaces

[Fiery-Fenix]

Description

Revives #34287 by picking it's changes.
Also changed changed approach from feature gate to configuration parameters (disabled by default).
In context of network metrics - default behavior of component hasn't changed, so I consider it as a non-breaking change.

Link to tracking issue

Fixes #30196

Testing

Unit test were updated to cover new functionality

Documentation

Documentation updated to cover new opt-in functionality

Original authors are included in the commit:
Co-authored-by: ChrsMark [email protected]
Co-authored-by: jinja2 [email protected]

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[Fiery-Fenix]

@dmitryax Could you please take a look while other code owners on vacation?

[ChrsMark]

Thank's for reviving this @Fiery-Fenix and sorry for the delay here. From my perspective I like the idea of having this configurable and not by default enabled so as to ensure that only users that actually need this will enable it.

@TylerHelmuth @jinja2 @povilasv what do you think about this?

[jinja2]

Config option sounds good to me. What do we think about renaming the config to collect_all_network_interfaces instead of add_all_interfaces_metrics?

[Fiery-Fenix]

Config option sounds good to me. What do we think about renaming the config to collect_all_network_interfaces instead of add_all_interfaces_metrics?

Renamed, new name sounds really better

[ChrsMark]

lgtm

[Fiery-Fenix]

Sorry for massive ping, accidentally rebased on outdated main branch in fork :(

[ChrsMark]

@jinja2 @TylerHelmuth @dmitryax @povilasv that should be ready for a review now.

[jinja2]

Changes to receiver lgtm, but there are tests failing

[dmitryax]

LGTM