Merge pull request #49 from Linuturk/consulcheck

Consul agent check
HDFS check
python 2.c
docs
Hadoop Job Tracker (v1) Map-Reduce check
Rename
Merge pull request #52 from dajobe/hadoop-jobtracker-check

Hadoop Job Tracker (v1) Map-Reduce check
Merge branch 'master' of github.com:dajobe/rackspace-monitoring-agent-plugins-contrib into hdfs-check
rm hadoop_hdfs.py
feat(etcd): initial import
fix(etcd): handle empty etcd state
Hadoop HBase check
Merge branch 'hbase-check' of github.com:dajobe/rackspace-monitoring-agent-plugins-contrib into hbase-check