(elbv2): NetworkTargetGroup is overly restrictive when setting healthCheckInterval

[peterwoodworth]

Describe the bug

NetworkTargetGroup only allows you to select 10 or 30 seconds for the health check interval. The allowed range is from 5 to 300.

Expected Behavior

I expect to be able to set the health check interval anywhere from 5 to 300 seconds

Current Behavior

I can only set the health check interval to be 10 or 30 seconds

Reproduction Steps

    const nlbService = new NetworkLoadBalancedFargateService(this, 'NlbFargatePattern', {
      taskDefinition,
    });

    nlbService.targetGroup.configureHealthCheck({
      interval: cdk.Duration.seconds(25)
    });

This will produce the following error message

Health check interval '25' not supported. Must be one of the following values '10,30'.

Possible Solution

Will submit PR

Additional Information/Context

No response

CDK CLI Version

2.64

Framework Version

No response

Node.js Version

16

OS

mac

Language

Typescript

Language Version

No response

Other information

No response

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