I'm trying to do the same on Google Cloud. Last time when I had the same issue on AWS, I just simpled downloaded *.pem and used as my private key. However, it seems like I can download it from Google Cloud. So I tried to generate SSH key from manager VM and use it. But that *.pub file doesn't seem to be working ( No provider available)
Is there any guide for CDH on Google Cloud regarding the private key issue? Thank you.