Add the new number field in the ports table

Added in several places:
 * database creation code
 * port addition code

Change-Id: Id4e2bd2704d5b9660df8baad34abda0f613ba4f2
diff --git a/admin.py b/admin.py
index cbed93d..2e95ae3 100644
--- a/admin.py
+++ b/admin.py
@@ -184,8 +184,8 @@
                   action = "store",
                   type = "string",
                   help = "Add a new port to the system",
-                  nargs = 2,
-                  metavar = "<switch_id> <name>")
+                  nargs = 3,
+                  metavar = "<switch_id> <name> <number>")
 port_group.add_option("--delete_port",
                   dest = "delete_port",
                   action = "store",
@@ -344,7 +344,8 @@
                              {'command':'db.create_port',
                               'data':
                               {'switch_id': opts.create_port[0],
-                               'name': opts.create_port[1]}})
+                                'name': opts.create_port[1],
+                                'number': opts.create_port[2]}})
         print 'Created port_id %d' % port_id
     except InputError as inst:
         print 'Failed: %s' % inst