r/aws_lb_listener: Add support for TCP idle timeout for NLB, GWLB listeners

[ddericco]

Description

Adds support for TCP idle timeout attribute on aws_lb_listener. This is supported for Network Load Balancer (NLB) listeners using the TCP protocol, and Gateway Load Balancers (GWLB) with the default GENEVE protocol.

Relations

Closes #39149

References

• NLB documentation: https://docs.aws.amazon.com/elasticloadbalancing/latest/network/network-load-balancers.html#connection-idle-timeout
• GWLB documentation: https://docs.aws.amazon.com/elasticloadbalancing/latest/gateway/gateway-load-balancers.html#idle-timeout
• API documentation: https://docs.aws.amazon.com/elasticloadbalancing/latest/APIReference/API_ModifyListenerAttributes.html
• SDK v2: https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/elasticloadbalancingv2#Client.ModifyListenerAttributes

Output from Acceptance Testing

$ make testacc TESTS='TestAccELBV2Listener_attributes_*' PKG=elbv2                                                    
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.7 test ./internal/service/elbv2/... -v -count 1 -parallel 20 -run='TestAccELBV2Listener_attributes_*'  -timeout 360m
=== RUN   TestAccELBV2Listener_attributes_gwlb_TCPIdleTimeoutSeconds
=== PAUSE TestAccELBV2Listener_attributes_gwlb_TCPIdleTimeoutSeconds
=== RUN   TestAccELBV2Listener_attributes_nlb_TCPIdleTimeoutSeconds
=== PAUSE TestAccELBV2Listener_attributes_nlb_TCPIdleTimeoutSeconds
=== CONT  TestAccELBV2Listener_attributes_gwlb_TCPIdleTimeoutSeconds
=== CONT  TestAccELBV2Listener_attributes_nlb_TCPIdleTimeoutSeconds
--- PASS: TestAccELBV2Listener_attributes_gwlb_TCPIdleTimeoutSeconds (187.47s)
--- PASS: TestAccELBV2Listener_attributes_nlb_TCPIdleTimeoutSeconds (250.42s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/elbv2      256.811s

[github-actions]

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