Add additional network configuration options to external Openstack CCM (#6083)

[Sryther]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Additional configuration options for external OpenStack CCM:

• Added Network configuration in cloud.conf which can be overriden:
  • Added parameter to disable IPv6 support
  • Added parameter to define public networks names
  • Added parameter to define internal networks names

Which issue(s) this PR fixes:

Fixes #6083

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

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[k8s-ci-robot]

Hi @Sryther. 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.

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[Sryther]

I finally signed really the CLA

[Sryther]

/assign @Atoms

[Sryther]

/unassign @Atoms

Sorry ^^ I tried some things

[floryut]

@Sryther could you rebase ? test failure are now fixed in master branch.. thank you and sorry about that!

[Sryther]

/retest

[k8s-ci-robot]

@Sryther: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[Sryther]

It seems the pipeline failed because it reached its activity limit. Am I right? What can I do?

[floryut]

It seems the pipeline failed because it reached its activity limit. Am I right? What can I do?

Yes lot of activity today.. The CI is kind of overloaded, I've restarted your pipeline

[LuckySB]

/ok-to-test

[floryut]

/lgtm

[Miouge1]

Great if you can review this @alijahnas

/assgin @alijahnas

[alijahnas]

Hi @Sryther
Thanks for the contribution.
Can you add a section in the doc https://github.com/kubernetes-sigs/kubespray/blob/master/docs/openstack.md#upgrade-from-the-in-tree-to-the-external-cloud-provider
where you can provide explanation that in case of a multi-nic OpenStack VMs, one should set these parameters? You can also link to your issue and the issue from cloud-provider-openstack for information.
#6083
kubernetes/cloud-provider-openstack#407

Thanks!

[alijahnas]

Thanks @Sryther
/lgtm
/retest

[Sryther]

I rebased since I saw builds failing. I hope it'll fix them.

[alijahnas]

/lgtm

[Miouge1]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Miouge1, Sryther

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