📖 Instance create timeout is in minutes

[pierreprinetti]

Mention that the value of
CLUSTER_API_OPENSTACK_INSTANCE_CREATE_TIMEOUT must be set in minutes.

What this PR does / why we need it:
In the user documentation, it was not clear that the value passed as CLUSTER_API_OPENSTACK_INSTANCE_CREATE_TIMEOUT is interpreted as minutes (as opposed to seconds, for example).

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #1266

Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

TODOs:

• squashed commits
• if necessary:
  • includes documentation
  • adds unit tests

/hold

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[k8s-ci-robot]

Hi @pierreprinetti. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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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.

[tobiasgiese]

/approve
/lgtm

thanks, totally agree that it was misleading

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pierreprinetti, tobiasgiese

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [tobiasgiese]

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[jichenjc]

/lgtm

[pierreprinetti]

Am I the one who should remove the /hold?

[tobiasgiese]

Am I the one who should remove the /hold?

You can, sure. But we can as well 🙂
/unhold