Migrate from klog v1 to klog/v2 and honor stderrthreshold

[pierluigilenoci]

Summary

• Replace the deprecated k8s.io/klog (v1) import with k8s.io/klog/v2 across all 91 non-vendor Go source files
• Fix klog v1→v2 API incompatibility: klog.V(level) returns klog.Verbose instead of bool in v2, updated to use .Enabled() in pkg/podman/podman.go
• Upgrade k8s.io/klog/v2 from v2.100.1 to v2.140.0
• Configure legacy_stderr_threshold_behavior=false and stderrthreshold=INFO flags after klog.InitFlags() in cmd/odo/odo.go so that klog properly honors the stderr threshold setting
• Regenerate vendor/ directory

Motivation

k8s.io/klog v1 is deprecated and unmaintained. The v2 module is the actively maintained replacement.

Additionally, klog v2 introduced a behavioral change where stderrthreshold defaults to ERROR but the legacy behavior silently overrides it. Setting legacy_stderr_threshold_behavior=false ensures the stderrthreshold flag is actually respected.

Ref: kubernetes/klog#212, kubernetes/klog#432

Test plan

• go build ./... passes (all packages)
• go mod tidy produces clean dependency graph
• go mod vendor regenerated successfully
• Existing CI/CD pipeline should validate no regressions

/cc @feloy @rm3l @kadel

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[openshift-ci]

Hi @pierluigilenoci. Thanks for your PR.

I'm waiting for a redhat-developer member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work.

Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Details

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud