each FlowEntry instance should not have logger instance

Change-Id: Idd47696efa5df7015cb1e5f3d362577194351f0f
diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowEntry.java b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowEntry.java
index d4657d2..7513894 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowEntry.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowEntry.java
@@ -8,7 +8,7 @@
 
 public class DefaultFlowEntry extends DefaultFlowRule implements FlowEntry {
 
-    private final Logger log = getLogger(getClass());
+    private static final Logger log = getLogger(DefaultFlowEntry.class);
 
     private long life;
     private long packets;
diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowRule.java b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowRule.java
index e5504db..6ecbbbc 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowRule.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/DefaultFlowRule.java
@@ -11,7 +11,7 @@
 
 public class DefaultFlowRule implements FlowRule {
 
-    private final Logger log = getLogger(getClass());
+    private static final Logger log = getLogger(DefaultFlowRule.class);
 
     private final DeviceId deviceId;
     private final int priority;