Avoid setting a default value for completionTimeoutPerGiB

[iholder101]

What this PR does / why we need it:
This PR serves two purposes:

1. Align with the changes done in Reduce default CompletionTimeoutPerGiB from 800s to 150s kubevirt#12848.
2. More generally, this is a step forward to eliminate non-essential defaults set by HCO which is an anti-pattern if not a bug. See more info in Remove non-essential defaults from HCO #3163.

Release note:

NONE

[kubevirt-bot]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[tiraboschi]

Please notice that is going to work only for new installations but it's not going to work for upgrades.

I'm even not sure that keeping it undefined is the best way to handle it.

[openshift-ci]

@iholder101: 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/hco-e2e-operator-sdk-sno-aws	7b349e7	link	false	/test hco-e2e-operator-sdk-sno-aws
ci/prow/hco-e2e-operator-sdk-aws	7b349e7	link	true	/test hco-e2e-operator-sdk-aws
ci/prow/hco-e2e-operator-sdk-gcp	7b349e7	link	true	/test hco-e2e-operator-sdk-gcp
ci/prow/hco-e2e-upgrade-operator-sdk-sno-aws	7b349e7	link	false	/test hco-e2e-upgrade-operator-sdk-sno-aws
ci/prow/hco-e2e-consecutive-operator-sdk-upgrades-aws	7b349e7	link	true	/test hco-e2e-consecutive-operator-sdk-upgrades-aws
ci/prow/hco-e2e-upgrade-operator-sdk-aws	7b349e7	link	true	/test hco-e2e-upgrade-operator-sdk-aws
ci/prow/hco-e2e-upgrade-prev-operator-sdk-aws	7b349e7	link	true	/test hco-e2e-upgrade-prev-operator-sdk-aws
ci/prow/hco-e2e-upgrade-prev-operator-sdk-sno-aws	7b349e7	link	false	/test hco-e2e-upgrade-prev-operator-sdk-sno-aws
ci/prow/hco-e2e-upgrade-operator-sdk-sno-azure	7b349e7	link	false	/test hco-e2e-upgrade-operator-sdk-sno-azure
ci/prow/hco-e2e-operator-sdk-azure	7b349e7	link	true	/test hco-e2e-operator-sdk-azure
ci/prow/hco-e2e-upgrade-operator-sdk-azure	7b349e7	link	true	/test hco-e2e-upgrade-operator-sdk-azure
ci/prow/hco-e2e-operator-sdk-sno-azure	7b349e7	link	false	/test hco-e2e-operator-sdk-sno-azure
ci/prow/hco-e2e-upgrade-prev-operator-sdk-sno-azure	7b349e7	link	false	/test hco-e2e-upgrade-prev-operator-sdk-sno-azure
ci/prow/hco-e2e-upgrade-prev-operator-sdk-azure	7b349e7	link	true	/test hco-e2e-upgrade-prev-operator-sdk-azure
ci/prow/hco-e2e-consecutive-operator-sdk-upgrades-azure	7b349e7	link	true	/test hco-e2e-consecutive-operator-sdk-upgrades-azure
ci/prow/hco-e2e-kv-smoke-azure	7b349e7	link	true	/test hco-e2e-kv-smoke-azure

Full PR test history. Your PR dashboard.

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[hco-bot]

hco-e2e-kv-smoke-gcp lane succeeded.
/override ci/prow/hco-e2e-kv-smoke-azure

[kubevirt-bot]

@hco-bot: Overrode contexts on behalf of hco-bot: ci/prow/hco-e2e-kv-smoke-azure

In response to this:

hco-e2e-kv-smoke-gcp lane succeeded.
/override ci/prow/hco-e2e-kv-smoke-azure

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-sigs/prow repository.

[kubevirt-bot]

PR needs rebase.

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-sigs/prow repository.

[kubevirt-bot]

@iholder101: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-hyperconverged-cluster-operator-e2e-k8s-1.32	7b349e7	link	true	/test pull-hyperconverged-cluster-operator-e2e-k8s-1.32

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-sigs/prow repository. I understand the commands that are listed here.