ONOS-2456 Added usage metrics to Atomic Counter and Distributed Queue plus refactored the code a bit

Refactored code plus instrumented AtomicValue and DistributedSet

Change-Id: I9c5f7c9f23d530131f15d3c98250ea33238dd2ec
diff --git a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicCounterBuilder.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicCounterBuilder.java
index dbba918..4f0a296 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicCounterBuilder.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicCounterBuilder.java
@@ -15,12 +15,12 @@
  */
 package org.onosproject.store.consistent.impl;
 
-import java.util.concurrent.ScheduledExecutorService;
-
 import org.onosproject.store.service.AsyncAtomicCounter;
 import org.onosproject.store.service.AtomicCounter;
 import org.onosproject.store.service.AtomicCounterBuilder;
 
+import java.util.concurrent.ScheduledExecutorService;
+
 import static com.google.common.base.Preconditions.checkArgument;
 
 /**
@@ -33,6 +33,7 @@
     private final Database partitionedDatabase;
     private final Database inMemoryDatabase;
     private boolean retryOnFailure = false;
+    private boolean metering = true;
     private ScheduledExecutorService retryExecutor = null;
 
     public DefaultAtomicCounterBuilder(Database inMemoryDatabase, Database partitionedDatabase) {
@@ -57,14 +58,14 @@
     public AtomicCounter build() {
         validateInputs();
         Database database = partitionsEnabled ? partitionedDatabase : inMemoryDatabase;
-        return new DefaultAtomicCounter(name, database, retryOnFailure, retryExecutor);
+        return new DefaultAtomicCounter(name, database, retryOnFailure, metering, retryExecutor);
     }
 
     @Override
     public AsyncAtomicCounter buildAsyncCounter() {
         validateInputs();
         Database database = partitionsEnabled ? partitionedDatabase : inMemoryDatabase;
-        return new DefaultAsyncAtomicCounter(name, database, retryOnFailure, retryExecutor);
+        return new DefaultAsyncAtomicCounter(name, database, retryOnFailure, metering, retryExecutor);
     }
 
     @Override
@@ -74,6 +75,12 @@
     }
 
     @Override
+    public AtomicCounterBuilder withMeteringDisabled() {
+        metering = false;
+        return this;
+    }
+
+    @Override
     public AtomicCounterBuilder withRetryExecutor(ScheduledExecutorService executor) {
         this.retryExecutor = executor;
         return this;