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* feature:``aws codedeploy``: Added support for setting up triggers for a deployment group.
* bugfix:``aws emr``: Fix missing dns name issue with private clusters. (`issue 1749 <https://github.com/aws/aws-cli/pull/1749>`__)
* bugfix:``aws emr``: Fix issue where impala args were not joined with commas. (`issue 1802 <https://github.com/aws/aws-cli/pull/1802>`__)