GUI -- refactored all the table views (server side) to use the new TableModel method of data generation.

Change-Id: Ib8a188ad432ff335db6cff1e49e08dbaf039436b
diff --git a/core/api/src/main/java/org/onosproject/ui/table/cell/DefaultCellFormatter.java b/core/api/src/main/java/org/onosproject/ui/table/cell/DefaultCellFormatter.java
index c030236..5e4f5ba 100644
--- a/core/api/src/main/java/org/onosproject/ui/table/cell/DefaultCellFormatter.java
+++ b/core/api/src/main/java/org/onosproject/ui/table/cell/DefaultCellFormatter.java
@@ -17,12 +17,20 @@
 
 package org.onosproject.ui.table.cell;
 
+import org.onosproject.ui.table.CellFormatter;
+
 /**
  * A default cell formatter. Uses the object's toString() method.
  */
 public class DefaultCellFormatter extends AbstractCellFormatter {
+
     @Override
     public String nonNullFormat(Object value) {
         return value.toString();
     }
+
+    /**
+     * An instance of this class.
+     */
+    public static final CellFormatter INSTANCE = new DefaultCellFormatter();
 }