🐛 correction of issue #2617 selected fixed subnet not applied

[nonowheels63]

What this PR does / why we need it:
This PR enable the usage of a provided subnet when it is provided. At first the provided network wasn't used when the there where multiple subnet attached to the network, one random subnet was used (the first returned by the api).

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 #2617

Special notes for your reviewer:
This PR is related to #2624.
I don't know if i have to close the last PR ?!

TODOs:

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

/hold

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: nonowheels63 (d363b1e)

[netlify]

✅ Deploy Preview for kubernetes-sigs-cluster-api-openstack ready!

Name	Link
🔨 Latest commit	d363b1e
🔍 Latest deploy log	https://app.netlify.com/projects/kubernetes-sigs-cluster-api-openstack/deploys/689350ea191aa800081e42e0
😎 Deploy Preview	https://deploy-preview-2639--kubernetes-sigs-cluster-api-openstack.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[k8s-ci-robot]

Hi @nonowheels63. 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.

I understand the commands that are listed here.

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.

[lentzi90]

/ok-to-test

[nonowheels63]

/retest

[lentzi90]

This makes sense to me
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lentzi90

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

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [lentzi90]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[bnallapeta]

/lgtm

[k8s-ci-robot]

@bnallapeta: changing LGTM is restricted to collaborators

In response to this:

/lgtm

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.