Automatic merge from submit-queue.

Automated cherry pick of #61890: Specify DHCP domain for hostname

Cherry pick of #61890 on release-1.10.

#61890: Specify DHCP domain for hostname

```release-note
Fixing bug in openstack cloud provider when picking up hostname from metadata service or config drive. If the hostname has a custom domain, we should remove the domain before we use the hostname as the node name in kubernetes.
```