Test

add unit test and remove unused code #1480

Job	Run time
Unit test go	1m 20s
Backup and restore after upgrade (docker-compose, standalone, standalone, v2.4.17, master-latest)	3m 13s
Backup and restore after upgrade (docker-compose, standalone, standalone, v2.4.17, 2.4-latest)	3m 32s
Backup and restore with rbac config (helm, standalone, master-latest)	8m 44s
Backup and restore cli (docker-compose, standalone, standalone, master-latest)	3m 43s
Backup and restore after upgrade (docker-compose, standalone, standalone, 2.4-latest, master-latest)	3m 36s
Backup and restore cross version (docker-compose, standalone, standalone, 2.3-latest, master-latest)	3m 41s
Backup and restore cross version (docker-compose, standalone, standalone, 2.3-latest, 2.4-latest)	3m 36s
Backup and restore cross version (docker-compose, standalone, standalone, 2.4-latest, master-latest)	3m 50s
Backup and restore api (docker-compose, standalone, master-latest, L0)	12m 14s
Backup and restore api (docker-compose, standalone, master-latest, L1)	7m 15s
Backup and restore api (docker-compose, standalone, master-latest, L2)	12m 18s
Backup and restore api (docker-compose, standalone, master-latest, MASTER)	4m 10s
Backup and restore api (docker-compose, standalone, 2.4-latest, L0)	10m 28s
Backup and restore api (docker-compose, standalone, 2.4-latest, L1)	6m 32s
Backup and restore api (docker-compose, standalone, 2.4-latest, L2)	10m 17s
	1h 38m 29s

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