MGMT-19166: Implement MTU checker

[linoyaslan]

As part of the MTU validation implementation, the agent will include the MTU checker in the connectivity check. It will send reports to the service if a ping with the specified MTU size fails.

[openshift-ci-robot]

@linoyaslan: This pull request references MGMT-19166 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 task to target the "4.18.0" version, but no target version was set.

In response to [this](https://github.com/openshift/assisted-installer-agent/pull/821): >As part of the MTU validation implementation, the agent will include the MTU checker in the connectivity check. It will send reports to the service if a ping with the specified MTU size fails. Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fassisted-installer-agent). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 64.81481% with 19 lines in your changes missing coverage. Please review.

Project coverage is 60.21%. Comparing base (a0b1057) to head (f2cb3b5). Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/connectivity_check/mtu_checker.go	64.70%	14 Missing and 4 partials :warning:
src/connectivity_check/connectivity_check.go	0.00%	1 Missing :warning:

Additional details and impacted files

[](https://app.codecov.io/gh/openshift/assisted-installer-agent/pull/821?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openshift) ```diff @@ Coverage Diff @@ ## master #821 +/- ## ========================================== + Coverage 60.16% 60.21% +0.05% ========================================== Files 74 75 +1 Lines 3891 3944 +53 ========================================== + Hits 2341 2375 +34 - Misses 1384 1399 +15 - Partials 166 170 +4 ``` | [Files with missing lines](https://app.codecov.io/gh/openshift/assisted-installer-agent/pull/821?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openshift) | Coverage Δ | | |---|---|---| | [src/connectivity\_check/connectivity\_runner.go](https://app.codecov.io/gh/openshift/assisted-installer-agent/pull/821?src=pr&el=tree&filepath=src%2Fconnectivity_check%2Fconnectivity_runner.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openshift#diff-c3JjL2Nvbm5lY3Rpdml0eV9jaGVjay9jb25uZWN0aXZpdHlfcnVubmVyLmdv) | `92.30% <ø> (ø)` | | | [src/connectivity\_check/util.go](https://app.codecov.io/gh/openshift/assisted-installer-agent/pull/821?src=pr&el=tree&filepath=src%2Fconnectivity_check%2Futil.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openshift#diff-c3JjL2Nvbm5lY3Rpdml0eV9jaGVjay91dGlsLmdv) | `74.64% <100.00%> (+0.36%)` | :arrow_up: | | [src/connectivity\_check/connectivity\_check.go](https://app.codecov.io/gh/openshift/assisted-installer-agent/pull/821?src=pr&el=tree&filepath=src%2Fconnectivity_check%2Fconnectivity_check.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openshift#diff-c3JjL2Nvbm5lY3Rpdml0eV9jaGVjay9jb25uZWN0aXZpdHlfY2hlY2suZ28=) | `0.00% <0.00%> (ø)` | | | [src/connectivity\_check/mtu\_checker.go](https://app.codecov.io/gh/openshift/assisted-installer-agent/pull/821?src=pr&el=tree&filepath=src%2Fconnectivity_check%2Fmtu_checker.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openshift#diff-c3JjL2Nvbm5lY3Rpdml0eV9jaGVjay9tdHVfY2hlY2tlci5nbw==) | `64.70% <64.70%> (ø)` | |

---

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[linoyaslan]

/hold

[linoyaslan]

/override ci/prow/e2e-agent-compact-ipv4

[openshift-ci[bot]]

@linoyaslan: linoyaslan unauthorized: /override is restricted to Repo administrators, approvers in top level OWNERS file, and the following github teams:openshift: openshift-release-oversight openshift-staff-engineers.

In response to [this](https://github.com/openshift/assisted-installer-agent/pull/821#issuecomment-2491281027): >/override ci/prow/e2e-agent-compact-ipv4 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[openshift-ci[bot]]

@linoyaslan: linoyaslan unauthorized: /override is restricted to Repo administrators, approvers in top level OWNERS file, and the following github teams:openshift: openshift-release-oversight openshift-staff-engineers.

In response to [this](https://github.com/openshift/assisted-installer-agent/pull/821#issuecomment-2491244314): >/override ci/prow/e2e-agent-compact-ipv4 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[eifrach]

/override ci/prow/e2e-agent-compact-ipv4

[eifrach]

/lgtm

[openshift-ci[bot]]

@eifrach: Overrode contexts on behalf of eifrach: ci/prow/e2e-agent-compact-ipv4

In response to [this](https://github.com/openshift/assisted-installer-agent/pull/821#issuecomment-2491365200): >/override ci/prow/e2e-agent-compact-ipv4 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[openshift-ci[bot]]

New changes are detected. LGTM label has been removed.

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: linoyaslan Once this PR has been reviewed and has the lgtm label, please ask for approval from eifrach. For more information see the Kubernetes Code Review Process.

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Needs approval from an approver in each of these files: - **[OWNERS](https://github.com/openshift/assisted-installer-agent/blob/master/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[linoyaslan]

/override ci/prow/e2e-agent-compact-ipv4

[openshift-ci[bot]]

@linoyaslan: Overrode contexts on behalf of linoyaslan: ci/prow/e2e-agent-compact-ipv4

In response to [this](https://github.com/openshift/assisted-installer-agent/pull/821#issuecomment-2495916986): >/override ci/prow/e2e-agent-compact-ipv4 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[openshift-ci[bot]]

@linoyaslan: all tests passed!

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository. I understand the commands that are listed [here](https://go.k8s.io/bot-commands).