Port related RESTful APIs is updated.

Signed-off-by: Min Chen <minchnew@gmail.com>
Add a RESTful API to get a list of all the available ports.

The API is hard code. Should be implemented by calling some low level APIs.

Signed-off-by: Min Chen <minchnew@gmail.com>
Port tab is done.

Signed-off-by: Min Chen <minchnew@gmail.com>