Configuration property - expected number of workers of H2O cloud.
Starting size of cluster in case that size is not explicitly passed
Configuration property - multiplication factor for dummy RDD generation.
Secure internal connections by automatically generated credentials
Location of iced directory for Spark nodes
Configuration property - base port used for individual H2O nodes configuration.
Configuration property - number of retries to create an RDD spread over all executors
Subsequent successful tries to figure out size of Spark cluster which are producing same number of nodes.