- Make watchNetworkingRule() function
- Make compareAndSwapHostNetworkInformation() function

- Add variables (ID, HostID, notificationChannel) in cb-network object for object independence
- Re-accommodate decodeAndSetNetworkingRule() under cb-network object
- Rename term from IPCIDRBlock to IPv4Network

- Add control() and process()
- Replace and fit the existing functions to the mechanism of process()

- Integrate with etcd control mechanism
- Newly create command package to handle commands and its message body
- Move and tidy up some source code blocks