bugfix: fix in which SQL and database field names are inconsistent#1217

[xionganyin]

Fix Rm cannot find primary key when primary key is Uppercase in sql ,using MySQL.
fixes #1217

[slievrly]

Briefly write pr, which will be used as the commit log. Such as bugfix: xxxx.

[slievrly]

LGTM

[xingfudeshi]

LGTM

[codecov-io]

Codecov Report

Merging #1221 into develop will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff             @@
##             develop    #1221   +/-   ##
==========================================
  Coverage      43.48%   43.48%           
  Complexity      1428     1428           
==========================================
  Files            250      250           
  Lines          10218    10218           
  Branches        1330     1330           
==========================================
  Hits            4443     4443           
- Misses          5190     5191    +1     
+ Partials         585      584    -1

Impacted Files	Coverage Δ	Complexity Δ
...o/seata/rm/datasource/sql/struct/TableRecords.java	73.77% <100%> (ø)	13 <0> (ø)	⬇️
...server/store/file/FileTransactionStoreManager.java	46.34% <0%> (ø)	19% <0%> (ø)	⬇️

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