Update controller-runtime to v0.15.0 & client-go to v0.28.0-alpha.2 &…

[austincunningham]

… double the requests and limits for the operator

[eguzki]

As of today, latest productized Golang image comes with 1.19. We do not know yet the estimated time of arrival for Golang 1.20. It should be in few months. We have seen RHEL9 based images shipped with Golang 1.20.

[austincunningham]

unit tests failing looks like its this bug kubernetes-sigs/controller-runtime#2362

[codeclimate]

Code Climate has analyzed commit 78e6a48 and detected 0 issues on this pull request.

View more on Code Climate.

[openshift-ci]

@austincunningham: 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/test-unit	78e6a48	link	true	/test test-unit
ci/prow/test-e2e	78e6a48	link	true	/test test-e2e

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[openshift-merge-robot]

PR needs rebase.

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