update dropwizard metrics library to 3.2.6

Author: LucaCanali

dev/deps/spark-deps-hadoop-2.7

@@ -149,10 +149,10 @@ lz4-java-1.6.0.jar
 machinist_2.12-0.6.8.jar
 macro-compat_2.12-1.1.1.jar
 mesos-1.4.0-shaded-protobuf.jar
-metrics-core-3.1.5.jar
-metrics-graphite-3.1.5.jar
-metrics-json-3.1.5.jar
-metrics-jvm-3.1.5.jar
+metrics-core-3.2.6.jar
+metrics-graphite-3.2.6.jar
+metrics-json-3.2.6.jar
+metrics-jvm-3.2.6.jar
 minlog-1.3.0.jar
 netty-all-4.1.42.Final.jar
 objenesis-2.5.1.jar

dev/deps/spark-deps-hadoop-3.2

@@ -179,10 +179,10 @@ lz4-java-1.6.0.jar
 machinist_2.12-0.6.8.jar
 macro-compat_2.12-1.1.1.jar
 mesos-1.4.0-shaded-protobuf.jar
-metrics-core-3.1.5.jar
-metrics-graphite-3.1.5.jar
-metrics-json-3.1.5.jar
-metrics-jvm-3.1.5.jar
+metrics-core-3.2.6.jar
+metrics-graphite-3.2.6.jar
+metrics-json-3.2.6.jar
+metrics-jvm-3.2.6.jar
 minlog-1.3.0.jar
 mssql-jdbc-6.2.1.jre7.jar
 netty-all-4.1.42.Final.jar

pom.xml

@@ -148,7 +148,7 @@
     <chill.version>0.9.3</chill.version>
     <ivy.version>2.4.0</ivy.version>
     <oro.version>2.0.8</oro.version>
-    <codahale.metrics.version>3.1.5</codahale.metrics.version>
+    <codahale.metrics.version>3.2.6</codahale.metrics.version>
     <avro.version>1.8.2</avro.version>
     <avro.mapred.classifier>hadoop2</avro.mapred.classifier>
     <aws.kinesis.client.version>1.8.10</aws.kinesis.client.version>