Since there is no option to set the “maintenance track” when creating a cluster, I am trying to give a cluster_version instead. However, I have tried few cluster_versions that in the Cluster Management Guide. It gives me an error like this 
Error: InvalidParameterCombination: Cannot find Cluster version 1.0.12911
status code: 400, request id: 99a74232-5278-11ea-a6c3-999510296f83
How to set the cluster_version correctly in order to use preview maintenance track ? Any help will be appreciated.