e2e: Use fully qualified image name for images

[RamLavi]

CRI-O 1.34+ enforces short name mode by default, which refuses to pull images with unqualified names like 'alpine/centos:8/ubuntu' because they are ambiguous.

This PR changes the use short name image to the fully qualified images, in order to fix image pull failures on Kubernetes 1.34+ clusters.

Fixes: #1471

[gemini-code-assist]

Summary of Changes

Hello @RamLavi, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a compatibility issue with newer Kubernetes environments running CRI-O 1.34+ by updating an image reference in an end-to-end test template. The modification ensures that images are pulled successfully by providing their fully qualified names, thereby preventing test failures related to CRI-O's stricter image name resolution policy.

Highlights

• Image Reference Update: The alpine image reference has been updated to its fully qualified name, docker.io/library/alpine, within the e2e/templates/cni-install.yml.j2 file.
• CRI-O Compatibility Fix: This change resolves image pull failures occurring in Kubernetes 1.34+ clusters, where CRI-O 1.34+ enforces the use of fully qualified image names by default, preventing issues with ambiguous short names.

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[gemini-code-assist]

Code Review

This pull request correctly resolves an image pull failure on newer Kubernetes clusters by using a fully qualified image name for Alpine. This is a necessary and well-executed change. I have one suggestion to further improve the stability of the e2e tests by pinning the Alpine image to a specific version, which is a recommended best practice to ensure reproducible builds.

[gemini-code-assist]

For better reproducibility and to avoid unexpected changes, it's recommended to pin the Docker image to a specific version tag instead of relying on the implicit :latest tag. This ensures that the e2e tests always use the same version of the Alpine image, preventing potential failures due to upstream changes in the image.

        image: docker.io/library/alpine:3.20

[coveralls]

coverage: 49.721% (-0.2%) from 49.907%
when pulling ed71f70 on RamLavi:fix_alpine_short_name
into 9c05100 on k8snetworkplumbingwg:master.

[maiqueb]

tks

[maiqueb]

tks