optimize: reduce HashMap initial size

[ruqinhu]

Ⅰ. Describe what this PR did

reduce HashMap initial size,It doesn't need size of 16.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1930 into develop will increase coverage by <.01%.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             develop    #1930      +/-   ##
=============================================
+ Coverage      55.16%   55.17%   +<.01%     
  Complexity      2402     2402              
=============================================
  Files            429      429              
  Lines          14246    14246              
  Branches        1668     1668              
=============================================
+ Hits            7859     7860       +1     
  Misses          5679     5679              
+ Partials         708      707       -1

Impacted Files	Coverage Δ	Complexity Δ
...a/rm/tcc/interceptor/ActionInterceptorHandler.java	25.37% <0%> (ø)	7 <0> (ø)	⬇️
...server/store/file/FileTransactionStoreManager.java	56.5% <0%> (+0.31%)	29% <0%> (ø)	⬇️

[slievrly]

LGTM

[xingfudeshi]

LGTM.