* Replace llvm-gcc with gcc.
* Define new Hadoop services.
* Add retry when first using Hadoop.
* Add procps to debian packages to address bug.
* Increase memory allocation.

allow for mapred/yarn resource config

use default mapreduce memory settings

corrected defaults for m1.medium, added yarn scheduler vars

testing with increased yarn am resource

remove task.io settings, defaults to AWS recommended

testing new hadoop conditional configuration

iter dict for conditional config