refactor: use rocksdb_wrapper::write_batch_put_ctx to reimplement multi_put

[levy5307]

What problem does this PR solve?

use rocksdb_wrapper::write_batch_put_ctx to reimplement multi_put.

• Manual test (add detailed scripts or steps below)

>>> use temp
OK
>>> ls -d
[general_info]
app_id  status     app_name  app_type  partition_count  replica_count  is_stateful  create_time          drop_time  drop_expire  envs_count  
1       AVAILABLE  stat      pegasus   4                3              true         2020-12-31_14:40:35  -          -            0           
2       AVAILABLE  temp      pegasus   8                3              true         2020-12-31_14:40:35  -          -            0           

[healthy_info]
app_id  app_name  partition_count  fully_healthy  unhealthy  write_unhealthy  read_unhealthy  
1       stat      4                4              0          0                0               
2       temp      8                8              0          0                0               

[summary]
total_app_count            : 2
fully_healthy_app_count    : 2
unhealthy_app_count        : 0
write_unhealthy_app_count  : 0
read_unhealthy_app_count   : 0

>>> multi_set hash sort1 value1 sort2 value2 sort3 value3
OK

app_id          : 2
partition_index : 4
decree          : 5
server          : 10.232.55.210:34803
>>> multi_get hash sort1 sort2 sort3
"hash" : "sort1" => "value1"
"hash" : "sort2" => "value2"
"hash" : "sort3" => "value3"

3 key-value pairs got, fetch completed.

app_id          : 2
partition_index : 4
server          : 10.232.55.210:34803
>>>