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Fixing vSphere Cloud Provider to use "vsphere-cloud-provider" to create ClientBuilder
**What this PR does / why we need it**:
vSphere cloud Provider is not using lower case naming while creating clientBuilder.
With this fix, ClientBuilder is created using lowercase naming.
With mixed upper-lower case name, controller manager is crashing.
**Which issue(s) this PR fixes**
Fixes # https://github.com/kubernetes/kubernetes/issues/57279
**Special notes for your reviewer**:
None
**Release note**:
```release-note
This fixes controller manager crash in certain vSphere cloud provider environment.
```
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