OCPNODE-2023: add metrics_host to config

[rphillips]

Allows for localhost only metrics.

What type of PR is this?

/kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Add support for --metrics-host.

[kwilczynski]

@rphillips, these might be related:

• Feature request: add option to set metrics listen address (not just port) #7446
• Use 127.0.0.1 as the default address to listen on for other listeners #7448

[codecov]

Codecov Report

Merging #7677 (973b046) into main (501048d) will increase coverage by 0.00%.
Report is 2 commits behind head on main.
The diff coverage is 76.92%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7677   +/-   ##
=======================================
  Coverage   47.97%   47.98%           
=======================================
  Files         145      145           
  Lines       16248    16260   +12     
=======================================
+ Hits         7795     7802    +7     
- Misses       7510     7513    +3     
- Partials      943      945    +2     

[openshift-ci-robot]

@rphillips: This pull request references OCPNODE-2023 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.16.0" version, but no target version was set.

In response to this:

Allows for localhost only metrics.

What type of PR is this?

/kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[haircommander]

docs need updating: https://github.com/cri-o/cri-o/actions/runs/7544557013/job/20538161526?pr=7677
I believe there is a --metrics-port cli flag, should we have a cli flag for this as well?

[sohankunkerkar]

@rphillips could you handle these two failures?
https://github.com/cri-o/cri-o/actions/runs/7560855103/job/20587783493?pr=7677
https://github.com/cri-o/cri-o/actions/runs/7560855084/job/20587869547?pr=7677
code LGTM
/retest

[haircommander]

/approve

LGTM, thanks! @cri-o/cri-o-maintainers PTAL

[kwilczynski]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: haircommander, kwilczynski, rphillips

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[rphillips]

/test ci-cgroupv2-e2e-crun

[sohankunkerkar]

/retest

[rphillips]

/cherry-pick release-1.29

[openshift-cherrypick-robot]

@rphillips: new pull request created: #7700

In response to this:

/cherry-pick release-1.29

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