Upgrade RocksDB from v5.17.2 to v6.3.6

[javeme]

also upgraded deprecated options like max_background_jobs

and add some options:

• max_total_wal_size
• db_write_buffer_size
• delete_obsolete_files_period

related: #714
Change-Id: I693a8d4550110280c46f0c40da6b4e42ad540eb3

[codecov]

Codecov Report

Merging #722 into master will increase coverage by 0.6%.
The diff coverage is 94.44%.

@@             Coverage Diff             @@
##             master     #722     +/-   ##
===========================================
+ Coverage     70.72%   71.32%   +0.6%     
- Complexity     4321     4345     +24     
===========================================
  Files           281      281             
  Lines         20753    20762      +9     
  Branches       2925     2926      +1     
===========================================
+ Hits          14677    14808    +131     
+ Misses         4627     4503    -124     
- Partials       1449     1451      +2

Impacted Files	Coverage Δ	Complexity Δ
...h/backend/store/rocksdbsst/RocksDBSstSessions.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ugegraph/backend/store/rocksdb/RocksDBOptions.java	99.14% <100%> (+0.04%)	2 <0> (ø)	⬇️
...raph/backend/store/rocksdb/RocksDBStdSessions.java	69.9% <93.33%> (+0.22%)	29 <0> (+1)	⬆️
...a/com/baidu/hugegraph/backend/query/Condition.java	77.59% <0%> (-0.83%)	31% <0%> (ø)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	80.97% <0%> (+0.39%)	179% <0%> (ø)	⬇️
...baidu/hugegraph/backend/store/mysql/MysqlUtil.java	96.61% <0%> (+3.38%)	23% <0%> (ø)	⬇️
...aidu/hugegraph/backend/store/mysql/MysqlTable.java	81.85% <0%> (+8.54%)	72% <0%> (+10%)	⬆️
...u/hugegraph/backend/store/mysql/MysqlSessions.java	62.94% <0%> (+10.65%)	19% <0%> (+8%)	⬆️
...idu/hugegraph/backend/store/mysql/MysqlTables.java	89.01% <0%> (+14.01%)	1% <0%> (ø)	⬇️
...aidu/hugegraph/backend/store/mysql/MysqlStore.java	75.54% <0%> (+17.93%)	37% <0%> (+1%)	⬆️
... and 1 more

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