Add missing option in Openstack documentation and sample file.

[eurijon]

'pod_vif=nested-vlan' label was missing for master nodes in
openshift_node_groups section, both in documentation file
and in OSEv3 sample inventory file.

[papr-bot]

Can one of the admins verify this patch?
I understand the following commands:

• bot, add author to whitelist
• bot, test pull request
• bot, test pull request once

[vrutkovs]

/ok-to-test
/lgtm
/cherrypick release-3.11

[openshift-cherrypick-robot]

@vrutkovs: once the present PR merges, I will cherry-pick it on top of release-3.11 in a new PR and assign it to you.

Details

In response to this:

/ok-to-test
/lgtm
/cherrypick release-3.11

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.

[vrutkovs]

/cherrypick release-3.10

[openshift-cherrypick-robot]

@vrutkovs: once the present PR merges, I will cherry-pick it on top of release-3.10 in a new PR and assign it to you.

Details

In response to this:

/cherrypick release-3.10

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.

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: eurijon, vrutkovs

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

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• playbooks/openstack/OWNERS [vrutkovs]

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

[openshift-cherrypick-robot]

@vrutkovs: new pull request created: #10366

Details

In response to this:

/ok-to-test
/lgtm
/cherrypick release-3.11

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.

[openshift-cherrypick-robot]

@vrutkovs: new pull request created: #10367

Details

In response to this:

/cherrypick release-3.10

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.