optimize(undo): change default parser name to json from jackson

[106umao]

close #503

[codecov-commenter]

Codecov Report

Merging #525 (277d89f) into master (46da59f) will decrease coverage by 1.56%.
The diff coverage is 30.53%.

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@@            Coverage Diff             @@
##           master     #525      +/-   ##
==========================================
- Coverage   38.38%   36.83%   -1.56%     
==========================================
  Files         155      159       +4     
  Lines       10319    11020     +701     
==========================================
+ Hits         3961     4059      +98     
- Misses       6032     6615     +583     
- Partials      326      346      +20     

Impacted Files	Coverage Δ
pkg/client/client.go	0.00% <0.00%> (ø)
pkg/datasource/sql/at_resource_manager.go	0.00% <ø> (ø)
pkg/datasource/sql/conn_at.go	49.20% <ø> (ø)
pkg/datasource/sql/exec/executor.go	0.00% <ø> (ø)
.../datasource/sql/exec/select_for_update_executor.go	0.00% <ø> (ø)
pkg/datasource/sql/plugin.go	100.00% <ø> (ø)
pkg/datasource/sql/tx_at.go	23.52% <ø> (ø)
pkg/datasource/sql/tx_xa.go	45.45% <0.00%> (+12.12%)	⬆️
pkg/datasource/sql/types/types.go	12.82% <ø> (ø)
pkg/datasource/sql/xa/oracle_xa_connection.go	0.00% <ø> (ø)
... and 16 more

... and 3 files with indirect coverage changes

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