zookeeper: only enable followers check if we have an ensamble
systemd: improve nagios check
nagios: do not enable all checks for staging
Add missing utf-8 encoding to metadata files
hadoop: make number of map/red tasks configurable
base: add node to run_state in solo mode
hadoop: format namenode

Conflicts:
	environments/production.rb
mysql: listen on 0.0.0.0 and do not generate root pw in solo
openssl: do not deploy wildcard cert in solo mode
python: add missing utf-8 magic comment
sudo: remove action :nothing
add virtualbox cookbook
hadoop: only create namenode dir in solo mode
add script to install vagrant on mac
hadoop: disable permissions by default
add rake rc:iterm
hadoop: increase hdfs replication factor from 2 to 3
zookeeper: increase thresholds