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/intent/ConstrainedShortestPathIntent.java b/src/main/java/net/onrc/onos/core/intent/ConstrainedShortestPathIntent.java
index 7f3de9b..1e025b5 100644
--- a/src/main/java/net/onrc/onos/core/intent/ConstrainedShortestPathIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/ConstrainedShortestPathIntent.java
@@ -7,7 +7,7 @@
     protected double bandwidth;
 
     /**
-     * Default constructor for Kryo deserialization
+     * Default constructor for Kryo deserialization.
      */
     protected ConstrainedShortestPathIntent() {
     }
diff --git a/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java b/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java
index 31715a8..44ef6c3 100644
--- a/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java
@@ -1,7 +1,7 @@
 package net.onrc.onos.core.intent;
 
 /**
- * This class is instantiated by Run-times to express intent calculation error
+ * This class is instantiated by Run-times to express intent calculation error.
  *
  * @author Toshio Koide (t-koide@onlab.us)
  */
@@ -17,7 +17,7 @@
     public Intent parentIntent;
 
     /**
-     * Default constructor for Kryo deserialization
+     * Default constructor for Kryo deserialization.
      */
     protected ErrorIntent() {
     }
diff --git a/src/main/java/net/onrc/onos/core/intent/Intent.java b/src/main/java/net/onrc/onos/core/intent/Intent.java
index 27067b3..f90b6b0 100644
--- a/src/main/java/net/onrc/onos/core/intent/Intent.java
+++ b/src/main/java/net/onrc/onos/core/intent/Intent.java
@@ -27,7 +27,7 @@
     private LinkedList<String> logs = new LinkedList<>();
 
     /**
-     * Default constructor for Kryo deserialization
+     * Default constructor for Kryo deserialization.
      */
     protected Intent() {
         logs.add(String.format("created, time:%d", System.nanoTime())); // for measurement
diff --git a/src/main/java/net/onrc/onos/core/intent/PathIntent.java b/src/main/java/net/onrc/onos/core/intent/PathIntent.java
index 633fe8b..b936ea4 100644
--- a/src/main/java/net/onrc/onos/core/intent/PathIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/PathIntent.java
@@ -20,7 +20,7 @@
     }
 
     /**
-     * Default constructor for Kryo deserialization
+     * Default constructor for Kryo deserialization.
      */
     protected PathIntent() {
     }
diff --git a/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java b/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java
index f97b4c1..de1f6e2 100644
--- a/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java
+++ b/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java
@@ -92,7 +92,7 @@
     }
 
     /**
-     * calculate available bandwidth of specified link
+     * calculate available bandwidth of specified link.
      *
      * @param link
      * @return
diff --git a/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java b/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
index 3adc756..38892b2 100644
--- a/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
@@ -16,7 +16,7 @@
     protected String pathIntentId = null;
 
     /**
-     * Default constructor for Kryo deserialization
+     * Default constructor for Kryo deserialization.
      */
     protected ShortestPathIntent() {
     }
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java b/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java
index 5a6d2e9..ee28b4b 100644
--- a/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java
@@ -35,7 +35,7 @@
     }
 
     /**
-     * calculate shortest-path and constrained-shortest-path intents into low-level path intents
+     * calculate shortest-path and constrained-shortest-path intents into low-level path intents.
      *
      * @param intentOpList IntentOperationList having instances of ShortestPathIntent/ConstrainedShortestPathIntent
      * @param pathIntents  a set of current low-level intents