Merge branch 'rocksdb' into 'release-v1'

no change config

See merge request megasearch/vecwise_engine!18

Former-commit-id: 8b8b2fccd49ac6935e9da0bd2b81f94ac75311a6

cpp/conf/server_config.yaml

 server_config:
-  address: 127.0.0.1
+  address: 0.0.0.0
   port: 33001
   transfer_protocol: json   #optional: binary, compact, json, debug
   server_mode: thread_pool    #optional: simple, thread_pool