Scaling Policy Target Tracking Scaling Policy Configuration
constructor(customizedMetricSpecification: ScalingPolicyCustomizedMetricSpecification? = null, disableScaleIn: Boolean? = null, predefinedMetricSpecification: ScalingPolicyPredefinedMetricSpecification? = null, scaleInCooldown: Int? = null, scaleOutCooldown: Int? = null, targetValue: Double)