Updated service API models for release.

Author: AWS SDK for Ruby

CHANGELOG.md

@@ -1,6 +1,10 @@
 Unreleased Changes
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+* Feature - Aws::AlexaForBusiness - Updated the API, and documentation for Alexa For Business.
+
+* Feature - Aws::DataSync - Updated the API, and documentation for AWS DataSync.
+
 2.11.278 (2019-05-20)
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