improve Timezone escape for driver dm/mysql

[LonelySally]

判定Timezone是否需要转义

[codecov-commenter]

Codecov Report

Base: 79.63% // Head: 79.56% // Decreases project coverage by -0.07% ⚠️

Coverage data is based on head (895fc0b) compared to base (a746794).
Patch coverage: 0.00% of modified lines in pull request are covered.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2412      +/-   ##
==========================================
- Coverage   79.63%   79.56%   -0.07%     
==========================================
  Files         595      598       +3     
  Lines       49375    49718     +343     
==========================================
+ Hits        39318    39557     +239     
- Misses       8077     8164      +87     
- Partials     1980     1997      +17     

Flag	Coverage Δ
go-1.15-386	79.56% <0.00%> (-0.06%)	⬇️
go-1.15-amd64	79.60% <0.00%> (+0.03%)	⬆️
go-1.16-386	79.58% <0.00%> (-0.01%)	⬇️
go-1.16-amd64	79.62% <0.00%> (+<0.01%)	⬆️
go-1.17-386	79.58% <0.00%> (?)
go-1.17-amd64	79.61% <0.00%> (?)
go-1.18-amd64	79.51% <0.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
contrib/drivers/dm/dm.go	73.13% <0.00%> (-0.55%)	⬇️
contrib/drivers/mysql/mysql.go	68.00% <0.00%> (-1.39%)	⬇️
container/gmap/gmap_hash_str_any_map.go	97.00% <0.00%> (-1.00%)	⬇️
contrib/config/kubecm/kubecm.go	38.38% <0.00%> (ø)
contrib/drivers/oracle/oracle.go	79.45% <0.00%> (ø)
contrib/config/kubecm/kubecm_kube.go	100.00% <0.00%> (ø)
os/glog/glog_logger_rotate.go	64.70% <0.00%> (+1.35%)	⬆️
net/gtcp/gtcp_pool.go	75.55% <0.00%> (+6.66%)	⬆️

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