Fix javadoc warnings

Change-Id: I156c861729fd48d5e6792f810c342e1579482c04

@@ -45,6 +45,7 @@ public interface EdgePortService {
     /**
      * Returns a collection of all edge point for the specified device.
      *
+     * @param deviceId device identifier
      * @return iterable collection of all edge points for the device
      */
     Iterable<ConnectPoint> getEdgePoint(DeviceId deviceId);

@@ -39,6 +39,7 @@ public interface ObjectiveContext {
      * Invoked when error is encountered while executing the flow objective.
      *
      * @param objective objective to execute
+     * @param error error encountered
      */
     default void onError(Objective objective, ObjectiveError error) {
     }

@@ -91,6 +91,7 @@ public class Versioned<V> {
      * Maps this instance into another after transforming its
      * value while retaining the same version and creationTime.
      * @param transformer function to mapping the value
+     * @param <U> value type of the returned instance
      * @return mapped instance
      */
     public <U> Versioned<U> map(Function<V, U> transformer) {

@@ -59,6 +59,7 @@ public class TransactionManager {
      * Constructs a new TransactionManager for the specified database instance.
      *
      * @param database database
+     * @param mapBuilder builder for ConsistentMap instances
      */
     public TransactionManager(Database database, ConsistentMapBuilder<Long, Transaction> mapBuilder) {
         this.database = checkNotNull(database, "database cannot be null");

@@ -129,6 +129,7 @@ public class FlowsWebResource extends AbstractWebResource {
     /**
      * Creates a flow rule from a POST of a JSON string and attempts to apply it.
      *
+     * @param deviceId device identifier
      * @param stream input JSON
      * @return status of the request - CREATED if the JSON is correct,
      * BAD_REQUEST if the JSON is invalid