Autogenerated update (2018-09-28)

Update:
- cloudbuild_v1
- iamcredentials_v1
- logging_v2
- logging_v2beta1
- monitoring_v3
- servicemanagement_v1
- serviceuser_v1
- streetviewpublish_v1
- youtube_partner_v1

generated/google/apis/logging_v2/representations.rb

@@ -370,6 +370,7 @@ module Google
           property :text_payload, as: 'textPayload'
           property :timestamp, as: 'timestamp'
           property :trace, as: 'trace'
+          property :trace_sampled, as: 'traceSampled'
         end
       end