OpenStack Upgrade Test

Prepare:
- Reconfigure config.py file
- The parameter of server nodes:
  - 03 controller nodes:
    - CPU: 4 cores
    - RAM: 8G
    - Disk: 80G
  - 02 network nodes:
    - CPU: 4 cores
    - RAM: 4G
    - Disk: 80G
  - 03 compute nodes:
    - CPU: 8 cores
    - RAM: 8G
    - Disk: 80G
  - 01 database node:
    - CPU: 6 cores
    - RAM: 10G
    - Disk: 40G
Topology: