Description
in case you define the name of ecs capacity provider start with aws, ecs or fargate will create fail.
Use Case
if user define the name of ecs capacity provider, will pre-check before deploy.
Proposed Solution
add pre-check function.
Other information
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ecs-capacityprovider.html
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