Keep track of the number of tasks executed within the scheduler.
Expose a counter via JMX that reflects the number of services polled.
Collect and graph the number of services polled via JMX.
Avoid possible NPE.
Expose a counter via JMX that reflects the number of automations executed.
Collect and graph the number of automations ran via JMX.
Merge branch 'master' into feature-jmx-stats
Merge pull request #28 from j-white/feature-jmx-stats

Collect the number of services polled and the number of automations ran via JMX
Merge branch 'master' into refactor-vacuumd