Is there i document to setup by multinode cluster on google cloud. I am not able to do passwordless SSH which i reuqired for Ambari Cluster deployment.
Passwordless SSH is not a Mandatory item to setup ambari. Please see Manual Ambari Agent installation option in which we do not need to setup passwordless SSH.
In cases where you do not have SSH for Ambari to automatically install the Agents or you want to pre-install the Agents, you can perform a manual agent setup.
Regarding Google Could HDP setup the following Youtube video will be really great: https://www.youtube.com/watch?v=raCtS84Vb6w