Screen Shot:
https://drive.google.com/file/d/0B1UFZO9xX8eweERNX2FWVGRrMXM/view
Short Video:
https://youtu.be/lYt2U7qZG38
This patch realizes the Cloud Shell feature as following manner:
1. Add 'Cloud Shell' menu on the top menu bar.
2. When 'Cloud Shell' menu clicked, create console area on
the bottom of window.
3. If cloud shell container does not exists for the user,
create the container.
4. If cloud shell container exists, attach the console area
to the container.
5. Each time when attach to the container, clouds.yaml will be
exported into the container.
6. Password will be not imported into the container,
so user should set manually 'OS_PASSWORD' into envirinment
variables or 'password' into clouds.yaml.
Change-Id: Ia26be196758e5f3617b31750702a6c54436efb93
Depends-On: Ie4bc4d7302ce80ed9925db4156ff52f928460aca
9f45851859