Devcloud update for 4.3

[Edison Su]

After several fixes, devcloud is working on 4.3 branch now.
Manually create a new devcloud image(the only change to the image is to put 4.3 
system vm template into /opt/storage/secondary/**/1/1/), and put it under: 
http://pan.baidu.com/s/1dDkmM5r (Can't find a free place to hold 1.3G data, so 
put it in a Chinese dropbox like website(which has 2T storage for free...) ).
Not sure you can download it or not. If not, then I may need help to find 
another place to store the image.