Enable checkstyle Javadoc Comment Style rule

Turn on the Javadoc Comment Style rule and fix
any violations that come up.  This is related to
requiring javadoc description comments to end
with a '.'

Change-Id: I19cf1b9f00d3040987e0b4c8b39461e2e0ad66b5
diff --git a/src/main/java/net/onrc/onos/core/util/CallerId.java b/src/main/java/net/onrc/onos/core/util/CallerId.java
index 6986f13..93e968e 100644
--- a/src/main/java/net/onrc/onos/core/util/CallerId.java
+++ b/src/main/java/net/onrc/onos/core/util/CallerId.java
@@ -17,7 +17,7 @@
     }
 
     /**
-     * Copy constructor
+     * Copy constructor.
      *
      * @param otherCallerId
      */
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java b/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java
index cefc316..0290924 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java
@@ -208,7 +208,7 @@
     }
 
     /**
-     * Action structure for ACTION_SET_VLAN_VID: Set the 802.1q VLAN id
+     * Action structure for ACTION_SET_VLAN_VID: Set the 802.1q VLAN id.
      */
     public static class ActionSetVlanId {
         private short vlanId;        // The VLAN ID to set
@@ -307,7 +307,7 @@
     }
 
     /**
-     * Action structure for ACTION_SET_VLAN_PCP: Set the 802.1q priority
+     * Action structure for ACTION_SET_VLAN_PCP: Set the 802.1q priority.
      */
     public static class ActionSetVlanPriority {
         private byte vlanPriority;    // The VLAN priority to set
@@ -406,7 +406,7 @@
     }
 
     /**
-     * Action structure for ACTION_STRIP_VLAN: Strip the 802.1q header
+     * Action structure for ACTION_STRIP_VLAN: Strip the 802.1q header.
      */
     public static class ActionStripVlan {
         private boolean stripVlan;    // If true, strip the VLAN header
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryId.java b/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
index a46549f..542a19d 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
@@ -91,7 +91,7 @@
     }
 
     /**
-     * Return the hash code of the Flow Entry ID
+     * Return the hash code of the Flow Entry ID.
      */
     @Override
     public int hashCode() {
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java b/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java
index f0b1152..3b603e9 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java
@@ -526,7 +526,7 @@
     }
 
     /**
-     * Get the matching IP ToS (DSCP field, 6 bits)
+     * Get the matching IP ToS (DSCP field, 6 bits).
      *
      * @return the matching IP ToS.
      */
diff --git a/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java b/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java
index 0fb064e..389453f 100644
--- a/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java
+++ b/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java
@@ -9,7 +9,7 @@
 import org.slf4j.LoggerFactory;
 
 /**
- * Class for collecting performance measurements
+ * Class for collecting performance measurements.
  */
 public class PerformanceMonitor {
     private static final Logger log = LoggerFactory.getLogger(PerformanceMonitor.class);
@@ -36,7 +36,7 @@
     private static final double NORMALIZATION = Math.pow(10, 6);
 
     /**
-     * Start a performance measurement, identified by a tag
+     * Start a performance measurement, identified by a tag.
      * <p/>
      * Note: Only a single measurement can use the same tag at a time.
      * ..... not true anymore.
@@ -96,7 +96,7 @@
     }
 
     /**
-     * Write all performance measurements to the log
+     * Write all performance measurements to the log.
      */
     public void reportAll() {
         StringBuilder result = new StringBuilder();
@@ -149,7 +149,7 @@
     }
 
     /**
-     * Write the performance measurement for a tag to the log
+     * Write the performance measurement for a tag to the log.
      *
      * @param tag the tag name.
      */
@@ -169,14 +169,14 @@
     }
 
     /**
-     * A single performance measurement
+     * A single performance measurement.
      */
     public static class Measurement {
         long start;
         long stop = -1;
 
         /**
-         * Start the measurement
+         * Start the measurement.
          */
         public void start() {
             if (start <= 0) {
@@ -185,7 +185,7 @@
         }
 
         /**
-         * Stop the measurement
+         * Stop the measurement.
          */
         public void stop() {
             long now = System.nanoTime();
@@ -193,7 +193,7 @@
         }
 
         /**
-         * Stop the measurement at a specific time
+         * Stop the measurement at a specific time.
          *
          * @param time to stop
          */
@@ -204,7 +204,7 @@
         }
 
         /**
-         * Compute the elapsed time of the measurement in nanoseconds
+         * Compute the elapsed time of the measurement in nanoseconds.
          *
          * @return the measurement time in nanoseconds, or -1 if the measurement is stil running.
          */
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java b/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
index ca631e1..8c77fc8 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
@@ -70,7 +70,7 @@
     }
 
     /**
-     * Constructor to explicitly specify number of Kryo instances to pool
+     * Constructor to explicitly specify number of Kryo instances to pool.
      *
      * @param initialCapacity number of Kryo instance to preallocate
      */