Merge branch 'release/1.2.2' into develop
Support to migrate data from 0.14.9/0.16.0 to 0.16.5
Refacor codes in members-table-transformer
Refactor codes in transformer
Revise take-over-mechanism
Modify test of takeover-fun
Remove unnecessary codes
Add a test-case, which is 'detach after attach a same node'
Rollback a test parameter, which is 'num of recursive calls'
Refactor rebalance-related codes
Add more rebalance-related tests
Fix takeover-fun's bugs
Add a function of force-sync-workers in api
Refactor codes in api
Fix rebalance-related bugs
Remove unnecessary codes
Add one more rebalance-related test
Upgrade leo-mq to 0.12.21
Refactor rebalance-related codes
Bump leo_redundant_manager to 1.2.3