test:add replica 3 for cluster test case

fix(query): optimize the performance of tsdbread.

Release/ver 3.0.1.6

refact: adjust sync.h and syncState

release: build 3.0.1.6

fix: fix address sanitizer error

fix(executor): Batch Partition Operator memory leak

fix(vnode): ignore unhandled msg

fix: msg compatibility

fix(tmq): handle adding subtable for subscribing stb

enh: refact sync callback func

fix: remove last stt load info resetting from fs iterator

fix: fsync wal files and meta if data size not synced yet beyond a threshold

doc: update show variables

fix: wrong cpu usage

fix: invalid read problem of tsdb path

refactor: add some logs.

enh: refact syncMsg code