Optionalstoragedestination needs to be provided. e.g.
{ "dbfs" : { "destination" : "dbfs:/init-scripts/my_script.sh" } }
destination and either region or endpoint should also be provided. e.g.
{ "s3": { "destination" : "s3://init-scripts/my_script.sh", "region" : "us-west-2" } }
Cluster iam role is used to access s3, please make sure the cluster iam role in
instance_profile_arn has permission to write data to the s3 destination.
Config for an individual init script