Port current python scripts to work under both python2 and python3 #118
Description
*Issue migrated from trac ticket # 824 www.kunlunbase.com *
component: cluster provision | priority: major
2022-06-15 10:52:08: zhangjindong@zettadb.com created the issue
Currently, the python scripts are written to work with python2, but for these codes, especially the common used code, we should make they work also under python3, so that, we can use some python3 new features while using these common codes.