Fix some bugs and add full_meta #316

Job	Run time
test-backup-restore-with-custom-config (helm, standalone, milvus-backup)	5m 21s
test-backup-restore-with-custom-config (helm, standalone, milvus-bucket)	5m 19s
test-backup-restore-with-custom-config (helm, standalone, file, milvus-backup)	5m 20s
test-backup-restore-with-custom-config (helm, standalone, file, milvus-bucket)	5m 38s
test-backup-restore-cli (docker-compose, standalone, standalone)	3m 0s
test-backup-restore-cli (docker-compose, standalone, cluster)	2m 28s
test-backup-restore-cli (docker-compose, cluster, standalone)	3m 6s
test-backup-restore-cli (docker-compose, cluster, cluster)	2m 48s
test-backup-restore-cross-version (docker-compose, standalone, standalone)	3m 48s
test-backup-restore-api (docker-compose, standalone)	42m 36s
test-backup-restore-api (docker-compose, cluster)	43m 14s
test-backup-restore-api (helm, standalone)	50m 59s
	2h 53m 37s

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