Imports
- golang.org/x/net/context
- github.com/go-acme/lego/log
- google.golang.org/api/googleapi
- github.com/go-acme/lego/platform/wait
- google.golang.org/api/option
- golang.org/x/oauth2/google
- github.com/go-acme/lego/platform/config/env
- google.golang.org/api/dns/v1
- github.com/go-acme/lego/challenge/dns01