Autogenerated update (2018-08-31)

Update:
- appengine_v1
- appengine_v1beta
- appengine_v1beta4
- appengine_v1beta5
- bigquery_v2
- cloudtasks_v2beta3
- content_v2
- content_v2sandbox
- dlp_v2
- iamcredentials_v1
- language_v1beta2
- servicecontrol_v1
- spanner_v1
- youtube_partner_v1

generated/google/apis/appengine_v1/classes.rb

@@ -310,9 +310,11 @@ module Google
       class AutomaticScaling
         include Google::Apis::Core::Hashable
       
-        # Amount of time that the Autoscaler (https://cloud.google.com/compute/docs/
-        # autoscaler/) should wait between changes to the number of virtual machines.
-        # Only applicable in the App Engine flexible environment.
+        # The time period that the Autoscaler (https://cloud.google.com/compute/docs/
+        # autoscaler/) should wait before it starts collecting information from a new
+        # instance. This prevents the autoscaler from collecting information when the
+        # instance is initializing, during which the collected usage would not be
+        # reliable. Only applicable in the App Engine flexible environment.
         # Corresponds to the JSON property `coolDownPeriod`
         # @return [String]
         attr_accessor :cool_down_period