Enable ECS awsvpc trunking in account by default

[eduardomourar]

We need a mechanism to enable ECS awsvpc trunking by default in a AWS account. Here is the CloudFormation coverage related issue: aws-cloudformation/cloudformation-coverage-roadmap#271.

[Daniel-ZA]

+1 on this feature. The "AWS::ECS::Cluster ClusterSettings" resource type currently only supports enabling "containerInsights". Would love to also have ENI trunking option for this resource type.

You can see in the "PutAccountSetting" API that you can have the option "containerInsights" and "awsvpcTrunking".