🐛 Catch failure when fetching component URLs

[killianmuldoon]

Catch failures, i.e. non-200 status codes, when fetching component URLs to build a local repository with clusterctl in the e2e testing framework.

/area testing

[killianmuldoon]

/cherry-pick release-1.4

[k8s-infra-cherrypick-robot]

@killianmuldoon: once the present PR merges, I will cherry-pick it on top of release-1.4 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.4

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 kubernetes/test-infra repository.

[killianmuldoon]

/cherry-pick release-1.3

[chrischdi]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 9373022bbb824461f10f61e4956f00c9ae7230de

[fabriziopandini]

Really appreciate the effort in chasing down test flakes!
/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fabriziopandini

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• OWNERS [fabriziopandini]

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[k8s-infra-cherrypick-robot]

@killianmuldoon: new pull request created: #8489

In response to this:

/cherry-pick release-1.4

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 kubernetes/test-infra repository.