Implemented PsutilsKafkaProducer
Simplified Psutils producer
Implemented Kafka psutils consumer for riemann
reverted IPs for tests
Updated tests for Riemann in order to test psutils.
Updated Psutil producer.
Added startup instructions for psutil on riemann virtual machine.
Added install dependencies script for psutil on build
Merge pull request #1 from stealthly/psutils

psutil Integration for server level metric producing and consumption