* Update boot-tmp.yaml
* Update boot-mini-tmp.yaml
* Update Dockerfile
* Update _boot

- change the datafile_size to 10G
- use ob-deploy-1.2.1 instead of ob-deploy;
- use oceanbase-ce-3.1.3 instead of oceanbase-ce-3.1.2

- fix MINI_MODE bug:
`if ${MINI_MODE}` will throw exception while set the environment MINI_MODE=1