Merge pull request #610 from DataDog/ark/jmxfetch-new-gc-metrics

Configure jmxfetch to use new gc metrics

Author: realark

dd-java-agent/agent-jmxfetch/src/main/resources/jmxfetch-config.yaml

@@ -1,5 +1,6 @@
 init_config:
   is_jmx: true
+  new_gc_metrics: true
 
 instances:
 - jmx_url: service:jmx:local:///