Updated service API models for release.

Author: AWS SDK for Ruby

CHANGELOG.md

@@ -1,6 +1,12 @@
 Unreleased Changes
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+* Feature - Aws::DataSync - Updated the API, and documentation for AWS DataSync.
+
+* Feature - Aws::IoTAnalytics - Updated the API, and documentation for AWS IoT Analytics.
+
+* Feature - Aws::Lambda - Updated the API, and waiters for AWS Lambda.
+
 2.11.272 (2019-05-10)
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