feat(AWSCore): Adding support for the ap-southeast-5 region. #655

Job	Run time
validation	2s
Integration Test (AWSMobileClient)	7m 38s
Integration Test (AWSAutoScaling)	4m 7s
Integration Test (AWSCloudWatch)	4m 48s
Integration Test (AWSComprehend)	3m 21s
Integration Test (AWSCore)	5m 28s
Integration Test (AWSDynamoDB)	8m 12s
Integration Test (AWSEC2)	5m 11s
Integration Test (AWSElasticLoadBalancing)	3m 16s
Integration Test (AWSIoT)	15m 27s
Integration Test (AWSKMS)	4m 31s
Integration Test (AWSKinesis)	4m 5s
Integration Test (AWSKinesisVideoSignaling)	5m 5s
Integration Test (AWSLambda)	4m 48s
Integration Test (AWSLex)	5m 40s
Integration Test (AWSPinpoint)	14m 42s
Integration Test (AWSPolly)	4m 53s
Integration Test (AWSRekognition)	3m 32s
Integration Test (AWSS3)	13m 32s
Integration Test (AWSSES)	3m 59s
Integration Test (AWSSNS)	3m 31s
Integration Test (AWSSQS)	6m 22s
Integration Test (AWSTextract)	4m 5s
Integration Test (AWSTranscribe)	5m 36s
Integration Test (AWSTranscribeStreaming)	4m 50s
Integration Test (AWSTranslate)	3m 31s
	2h 30m 12s

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