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ECS update_service with desiredCount does not affect runningCount

1

Hi, When calling `update_service` with `desiredCount=x`, it doesn't affect the `runningCount` property of the service. Steps to reproduce (snippet borrowed from [test_ecs_boto3](https://github.com/getmoto/moto/blob/master/tests/test_ecs/test_ecs_boto3.py#L1202): ```python client = boto3.client("ecs", region_name=ECS_REGION) client.create_cluster(clusterName="test_ecs_cluster") client.register_task_definition( family="test_ecs_task",...

ELBV2 describe_target_health on deregistered target should return a state of "unused" instead of "unavailable"

2

As per this documentation - https://docs.aws.amazon.com/elasticloadbalancing/latest/application/target-group-health-checks.html The `unavailable` state is related to `Target.HealthCheckDisabled` when health check is disabled and `unsed` is related to `Target.NotRegistered`. However, here - https://github.com/getmoto/moto/blob/7a8a113a2030e0b9679d92c6fdc583ef63f3ef54/moto/elbv2/models.py#L176 `unavailable` is...

EC2 detach_network_interface should return error when removing the primary network interface

1

Hi, It seems that when calling `detach_network_interface` on the primary network interface (at index 0), AWS throws this error: `botocore.exceptions.ClientError: An error occurred (OperationNotPermitted) when calling the DetachNetworkInterface operation: The...