openstack: Add missing security groups for cilium etcd

[zadjadr]

Fixes #15765

[k8s-ci-robot]

Hi @zadjadr. Thanks for your PR.

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[hakman]

/cc @olemarkus
/assign @zetaab

[olemarkus]

Approach and rules looks good to me.

[zadjadr]

Seems like I missed 4003 from workers to master was also needed.
The cilium-agent pods on the workers would complain:

cilium-agent level=error msg="Unable to initialize local node. Retrying..." error="timeout while retrieving initial list of objects from kvstore" subsys=nodediscovery

[hakman]

/ok-to-test

[zadjadr]

Sorry, this should be the final addition.. When creating a new cluster, etcd tries to also check port 3992 (Master to Master)

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hakman

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[hakman]

/retest