fix(send): try to use command v2 to send messages

[ShannonDing]

What is the purpose of the change

[fix #189] fix(send): try to use command v2 to send messages

[codecov-io]

Codecov Report

Merging #225 into master will increase coverage by 0.86%.
The diff coverage is 98.85%.

@@            Coverage Diff             @@
##           master     #225      +/-   ##
==========================================
+ Coverage   51.01%   51.88%   +0.86%     
==========================================
  Files         173      174       +1     
  Lines       10701    10857     +156     
==========================================
+ Hits         5459     5633     +174     
+ Misses       5242     5224      -18

Impacted Files	Coverage Δ
src/common/AsyncCallbackWrap.cpp	9.58% <ø> (ø)	⬆️
src/common/AsyncCallbackWrap.h	33.33% <ø> (ø)	⬆️
src/MQClientFactory.cpp	18.45% <0%> (ø)	⬆️
src/producer/DefaultMQProducer.cpp	5.46% <0%> (-0.02%)	⬇️
src/MQClientAPIImpl.cpp	16.49% <100%> (+0.35%)	⬆️
test/src/protocol/CommandHeaderTest.cpp	100% <100%> (ø)	⬆️
test/src/common/MQVersionTest.cpp	100% <100%> (ø)
src/protocol/CommandHeader.h	76.82% <100%> (+6.06%)	⬆️
src/common/MQVersion.cpp	100% <100%> (+100%)	⬆️
src/common/VirtualEnvUtil.cpp	100% <100%> (+100%)	⬆️
... and 6 more

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