Using monitors that depend on aws-cloudwatch-exts-commons/src/main/java/com/appdynamics/extensions/aws/collectors/RegionMetricStatisticsCollector.java has trouble on ECS Fargate

Hi,

I am trying to run the standalone machine agent with the Route53 monitor in AWS ECS Fargate Service/Task/Container. However, the monitor fails to acquire credentials, because
aws-cloudwatch-exts-commons/src/main/java/com/appdynamics/extensions/aws/collectors/RegionMetricStatisticsCollector.java uses the InstanceProfileCredentialsProvider rather than the DefaultCredentialsProvider:

Caused by: com.amazonaws.AmazonClientException: Unable to load credentials from Amazon EC2 metadata service
at com.amazonaws.auth.InstanceProfileCredentialsProvider.handleError(InstanceProfileCredentialsProvider.java:244)
at com.amazonaws.auth.InstanceProfileCredentialsProvider.loadCredentials(InstanceProfileCredentialsProvider.java:225)
at com.amazonaws.auth.InstanceProfileCredentialsProvider.getCredentials(InstanceProfileCredentialsProvider.java:124)
at com.amazonaws.services.cloudwatch.AmazonCloudWatchClient.invoke(AmazonCloudWatchClient.java:970)
at com.amazonaws.services.cloudwatch.AmazonCloudWatchClient.listMetrics(AmazonCloudWatchClient.java:429)
at com.appdynamics.extensions.aws.metric.processors.MetricsProcessorHelper.getMetrics(MetricsProcessorHelper.java:79)
at com.appdynamics.extensions.aws.metric.processors.MetricsProcessorHelper.getMetrics(MetricsProcessorHelper.java:70)
at com.appdynamics.extensions.aws.metric.processors.MetricsProcessorHelper.getFilteredMetrics(MetricsProcessorHelper.java:40)
at com.appdynamics.extensions.aws.route53.Route53MetricsProcessor.getMetrics(Route53MetricsProcessor.java:45)
at com.appdynamics.extensions.aws.collectors.RegionMetricStatisticsCollector.call(RegionMetricStatisticsCollector.java:85)

Start with aws-cloudwatch-exts-commons/src/main/java/com/appdynamics/extensions/aws/collectors/RegionMetricStatisticsCollector.java and trace the credential provider used by the CloudWatch client. Check the Route53MetricsProcessor path and the reported ECS Fargate stack trace. Done means monitors using this collector can acquire credentials through the provider intended for ECS Fargate rather than only EC2 instance metadata.

Written by the indexing model from the issue text.