Support for VPC link between APIGW and Fargate Service

[dotxlem]

I've implemented some changes in a fork to allow using API Gateway as a proxy to a Fargate service. I wanted to check here first if this is something that could be pushed back upstream, and if so how to go about it properly.

There are changes to both aws-apigateway and aws-ecs, and I wasn't sure whether it was fine to make changes to both in the same PR if they're related.

API Gateway Changes
Added connectionType to the IntegrationOptions, to allow specifying VPC_LINK.
Added requestParameters to the MethodOptions to allow setting proxy path variable.

ECS Changes
For LoadBalancedFargateService:

• Added loadBalancerType prop to allow specifying a Network Load Balancer.
• Added containerEnvironment prop to allow passing environment variables to the container.

I'm not using it personally, but for completeness it wouldn't be much effort to do the same for the LoadBalancedEcsService.

[rix0rrr]

I would love to pull those changes upstream!

I would insist that you make the same changes to LoadBalancedEcsService though, and also please don't forget to include tests!

[rix0rrr]

cc @SoManyHs

[dotxlem]

Great! I'll aim to get a PR up sometime later this week, assuming it doesn't take me too long to write tests and update LoadBalancedEcsService.