https://kubernetes.io/docs/api-reference/v1.5/#servicespec-v1
Only applies to Service Type: LoadBalancer LoadBalancer will get created with the IP specified in this field. This feature depends on whether the underlying cloud-provider supports specifying the loadBalancerIP when a load balancer is created. This field will be ignored if the cloud-provider does not support the feature.
https://kubernetes.io/docs/api-reference/v1.5/#servicespec-v1