provide ca bundle for trusting the kube-apiserver

[deads2k]

We need to provide a cabundle for trusting the kube-apiserver since we're minting certificates.

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: deads2k

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[openshift-ci-robot]

@deads2k: The following test failed for commit 16d430f, say /retest to rerun them:

Test name	Details	Rerun command
ci/prow/e2e-aws	link	/test e2e-aws

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[deads2k]

haproxy flake,