Release v2.3.15 - 2016-06-21

Tag release v2.3.15

References:
#1098, #1138, #1184, #1202, #1208, #1209, #1212, #1215, #1216, #1223

• Feature - Aws::CodePipeline - Updated the API, and documentation for AWS CodePipeline.

• Feature - Aws::OpsWorks - Updated the documentation for AWS OpsWorks.

• Feature - Aws::EC2 - Added two waiter methods to Aws::EC2::VPC:

  • #wait_until_exists
  • #wait_until_available

  See related GitHub pull request #1179.

• Issue - Aws::S3 - Resolved an issue with Aws::S3::Client#head_object and
  #get_object where an ArgumentError was raised if Amazon S3 responded with
  an Expires header that contained an unparsable string.

  The #head_object and #get_object response now return nil when the Expires
  header contains an invalid value. You can now access the raw string value
  of the Expires header with #expires_string.

  # If Amazon S3 responds with `Expires: abc` as a header
  resp = s3.head_object(bucket:'bucket', key:'key')
  resp.expires #=> nil
  resp.expires_string #=> "abc"

  See related GitHub issue #1184.

• Issue - Memory Usage - Added a pair of utility methods that perform more efficient
  SHA4256 and MD5 checksums of file objects. Before this change, data was read in
  1MB chunks. Now using the OpenSSL::Digest.file interface to reduce memory usage.

  See related GitHub issue #1098.

• Issue - Aws::RDS - Resolved an issue with Aws::RDS#db_engine_version.

  See related GitHub issue #1138.

• Issue - Aws::RDS - Resolved an issue with Aws::RDS::DBInstance#pending_maintenance_actions
  that caused it to raise an error.