gddo-server: fix use of cloud logging library

A breaking change was made to the cloud logging library. This updates gddo to compile after the change.

Change-Id: I8f462f2e3447671c86f44b8a15a31fa2da7f117d
Reviewed-on: https://go-review.googlesource.com/30694
Reviewed-by: Andrew Gerrand <adg@golang.org>
2 files changed