oauth: Add an additional field to make OAuth work properly

This doesn't solve the entire problem here -- we need to adjust this to use a
modern method for getting the oauth credentials, but this works as a quick hack
to get us running again.

Change-Id: Idecf8a79ef5cc4c18e20aa86314be81f313852b0
diff --git a/tools/generate-oauth-credentials.sh b/tools/generate-oauth-credentials.sh
index 22c39c3..0890381 100755
--- a/tools/generate-oauth-credentials.sh
+++ b/tools/generate-oauth-credentials.sh
@@ -14,6 +14,7 @@
           clientId: "${clientid}"
           clientSecret: "${clientsecret}"
           domain: "google.com"
+          rootURLFromRequest: true
 
 # Indentation matters! DO NOT EDIT MANUALLY!
 EOF