Cannot create certain GCP GPU instances

Hi everyone,

I'm getting the following error when trying to create A100 or L4 based instances on GCP using `cml runner launch` (`a2-highgpu` and `g2-standard` types respectively):

```
***"level":"error","message":"terraform error: Error: Failed creating the machine: googleapi: Error 400: Instances with guest accelerators do not support live migration., badRequest"***
```

I have no problem creating V100 and T4 instances (both `n1` types).

I have found [this](https://groups.google.com/g/gce-discussion/c/e9K3h3fQuJk/m/UxyKqskLAQAJ) discussion, which suggests the maintenance policy needs to be set to `TERMINATE`. Am I on the right track, and if yes, is there a way to do that using `cml runner launch`?

Regards,
Alex.