optimize: optimization for DefaultRemotingParser

[ph3636]

Replace traversal by value

[codecov-io]

Codecov Report

Merging #2033 into develop will decrease coverage by 0.27%.
The diff coverage is 40.06%.

@@              Coverage Diff              @@
##             develop    #2033      +/-   ##
=============================================
- Coverage      53.06%   52.78%   -0.28%     
- Complexity      2500     2517      +17     
=============================================
  Files            485      488       +3     
  Lines          15303    15342      +39     
  Branches        1755     1750       -5     
=============================================
- Hits            8120     8098      -22     
- Misses          6407     6467      +60     
- Partials         776      777       +1

Impacted Files	Coverage Δ	Complexity Δ
...main/java/io/seata/core/store/db/LogStoreSqls.java	18.86% <ø> (ø)	10 <0> (ø)	⬇️
...in/java/io/seata/server/event/EventBusManager.java	66.66% <ø> (ø)	1 <0> (ø)	⬇️
...gure/provider/SpringBootConfigurationProvider.java	32.3% <0%> (-1.03%)	9 <0> (ø)
.../io/seata/common/loader/EnhancedServiceLoader.java	61.34% <0%> (-2.22%)	25 <0> (ø)
...in/java/io/seata/server/session/SessionHelper.java	64.86% <0%> (-15.14%)	8 <0> (ø)
.../java/io/seata/server/transaction/tcc/TccCore.java	100% <100%> (ø)	2 <2> (?)
...c/main/java/io/seata/config/FileConfiguration.java	36.79% <100%> (ø)	6 <0> (ø)	⬇️
...o/seata/integration/http/AbstractHttpExecutor.java	53.7% <100%> (ø)	10 <0> (ø)	⬇️
.../java/io/seata/core/context/ContextCoreLoader.java	100% <100%> (+42.85%)	1 <1> (ø)	⬇️
...o/seata/server/coordinator/DefaultCoordinator.java	54.35% <100%> (+4.16%)	28 <0> (-3)	⬇️
... and 27 more

[slievrly]

LGTM, by recording RemotingParser instance, avoid every call DefaultRemotingParser to iterate over.

[xingfudeshi]

LGTM.