GOSSIP-17 Add metrics (Chandresh Pancholi via egc)

pom.xml

@@ -39,6 +39,7 @@
 		
 		<!-- dependecy versions -->
 		<jackson.version>2.8.5</jackson.version>
+		<metrics.version>3.1.2</metrics.version>
 		<commons-math.version>1.2</commons-math.version>
 		<junit.jupiter.version>5.0.0-M2</junit.jupiter.version>
 		<junit.platform.version>1.0.0-M2</junit.platform.version>
@@ -90,6 +91,10 @@
 			<artifactId>jackson-databind</artifactId>
 			<version>${jackson.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>io.dropwizard.metrics</groupId>
+			<artifactId>metrics-core</artifactId>
+			<version>${metrics.version}</version></dependency>
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
 			<artifactId>junit-jupiter-api</artifactId>