Make sure the initial node is a master candidate

Reviewed-by: imsnah

lib/bootstrap.py

@@ -219,7 +219,9 @@ def InitCluster(cluster_name, mac_prefix, def_bridge,
   master_node_config = objects.Node(name=hostname.name,
                                     primary_ip=hostname.ip,
                                     secondary_ip=secondary_ip,
-                                    serial_no=1)
+                                    serial_no=1,
+                                    master_candidate=True,
+                                    )
 
   cfg = InitConfig(constants.CONFIG_VERSION,
                    cluster_config, master_node_config)