added carbon-aggregator support
added bats tests for carbon-aggregator
storage-aggregation.conf template moved to carbon-aggregator recipe
added aggregation-rules.conf file support
README: added aggregation_rules example
README: relay-rules example fixed/improved
tests: relay-rules.conf and aggregation-rules.conf content checking
Merge pull request #71 from onddo/carbon-aggregator

Add carbon-aggregator support