Print the reason why a task has failed to start

[riyadparvez]

ecs-deploy prints error messages if the tasks failed to start.

.warning: 1 tasks failed to start
.warning: 1 tasks failed to start
.warning: 1 tasks failed to start

It'd be very helpful if you can also print the task stopped reason which is provided by the AWS API https://boto3.amazonaws.com/v1/documentation/api/1.9.42/reference/services/ecs.html#ECS.Client.describe_tasks. It'd be a huge time saver.