Support mock servers in eks fargate

[sethAmazon]

[sethAmazon]

https://github.com/aws-observability/aws-otel-test-framework/blob/terraform/terraform/eks/main.tf#L170-L174 look here for setting the url of the mock server. Note sample app url is already set up

[sethAmazon]

Create ingress for mock server sample app ingress here https://github.com/aws-observability/aws-otel-test-framework/blob/terraform/terraform/eks/otlp.tf#L255-L287

[sethAmazon]

Check how pod type works for sample app then use for mock server https://github.com/aws-observability/aws-otel-test-framework/blob/terraform/terraform/eks/otlp.tf#L234-L253