#5 mapreduce historyserver is now part of Hadoop2 provisioning, fixes to mapred config, added hdfs_mkdir macro
#5 added new values to pillar example
additional environment variables for historyserver to work in HDP
#5: fixed init script name mismatch
more explicit permissions for config files
support mapreduce disk configuration via grains, less strict permissions on mapred.local.dir
fixed mapreduce settings, consistent data_disk support, fixes to hdfs settings
hdfs_data_disks and mapred_data_disks can only be set through top-level grains