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GCE: support Cloud TPU API in cloud provider

**What this PR does / why we need it**:

This PR adds the support for Cloud TPU API in GCE cloud provider.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
GCE: support Cloud TPU API in cloud provider
```

/assign @vishh 
/assign @cheftako