Revert "Fix endpoint admission test namespace creation for ROSA"

[Amarthya-v]

Avoid attempting to create existing namespaces like kube-system which triggers managed-cluster-validating-webhooks in ROSA.

This reverts commit 46bbe12.
Follows #30352

Resolves: SREP-2020

[openshift-ci]

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[openshift-ci]

@Amarthya-v: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws-ovn-serial-2of2	ede6286	link	true	/test e2e-aws-ovn-serial-2of2
ci/prow/e2e-gcp-ovn-upgrade	ede6286	link	true	/test e2e-gcp-ovn-upgrade

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[tssurya]

@sdodson PTAL this PR since original one was approved by you: #30331 I unfortunately don't have enough context to approve this one.

[sdodson]

@Amarthya-v Is this already reverted on master?

[sdodson]

I see #30352 for master, we'll also need this picked back to release-4.20 too. Can you open a bug for this change on master branch so that we can properly link everything together?

[Amarthya-v]

I see #30352 for master, we'll also need this picked back to release-4.20 too. Can you open a bug for this change on master branch so that we can properly link everything together?

@sdodson Thank you! below are the revert PRs and Jira ticket created

• Master revert: Revert "Fix endpoint admission test namespace creation for ROSA" #30352
• Release 4.19 revert: Revert "Fix endpoint admission test namespace creation for ROSA" #30354
• Release 4.20 revert: Revert "Merge pull request #30134 from Amarthya-v/fix-endpoint-admission-namespace-creation" #30362
• Jira bug: https://issues.redhat.com/browse/SREP-2020

All linked together now.

[sdodson]

Is the webhook already reverted? The ticket reads like it will be in the future.

[Amarthya-v]

Is the webhook already reverted? The ticket reads like it will be in the future.

webhook revert has been merged.