Remove trailing commas from yaml config

Because this breaks parsing

Author: rpuch

conf/gremlin-server.yaml

@@ -41,11 +41,11 @@ processors:
 - { className: org.apache.tinkerpop.gremlin.server.op.session.SessionOpProcessor, config: { sessionTimeout: 28800000 }}
 - { className: org.apache.tinkerpop.gremlin.server.op.traversal.TraversalOpProcessor, config: { cacheExpirationTime: 600000, cacheMaxSize: 1000 }}
 metrics:
-  consoleReporter: {enabled: true, interval: 180000},
-  csvReporter: {enabled: true, interval: 180000, fileName: /tmp/gremlin-server-metrics.csv},
-  jmxReporter: {enabled: true},
-  slf4jReporter: {enabled: true, interval: 180000},
-  gangliaReporter: {enabled: false, interval: 180000, addressingMode: MULTICAST},
+  consoleReporter: {enabled: true, interval: 180000}
+  csvReporter: {enabled: true, interval: 180000, fileName: /tmp/gremlin-server-metrics.csv}
+  jmxReporter: {enabled: true}
+  slf4jReporter: {enabled: true, interval: 180000}
+  gangliaReporter: {enabled: false, interval: 180000, addressingMode: MULTICAST}
   graphiteReporter: {enabled: false, interval: 180000}
 maxInitialLineLength: 4096
 maxHeaderSize: 8192