Automatic merge from submit-queue (batch tested with PRs 65902, 65781). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
if loadbalancer section is not defined in cloudconfig, do not init support
**What this PR does / why we need it**: if LoadBalancer section is not defined in cloudconfig, we should not initialize loadbalancer support for openstack cloudprovider.
**Which issue(s) this PR fixes**:
Fixes#65775
**Special notes for your reviewer**:
**Release note**:
```release-note
If LoadBalancer is not defined in cloud config, the loadbalancer is not initialized anymore in openstack. All setups must have some setting under that section
```
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