Feature/fix http 2

[houlei1017]

What does this PR do?

Why are these changes required?

This PR has been tested by:

• Unit Tests
• Manual Testing

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Extra details

[codecov-io]

Codecov Report

Merging #2175 into develop will increase coverage by 0.5%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             develop    #2175     +/-   ##
============================================
+ Coverage      41.38%   41.89%   +0.5%     
  Complexity      4341     4341             
============================================
  Files            552      549      -3     
  Lines          33483    33079    -404     
  Branches        3658     3602     -56     
============================================
- Hits           13858    13857      -1     
+ Misses         18298    17894    -404     
- Partials        1327     1328      +1

Impacted Files	Coverage Δ	Complexity Δ
.../services/http/TriggerConstantContractServlet.java	5.12% <0%> (+0.47%)	2 <0> (ø)	⬇️
...rc/main/java/org/tron/core/services/http/Util.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ore/services/http/TriggerSmartContractServlet.java	4.76% <0%> (+0.11%)	2 <0> (ø)	⬇️
...tron/common/overlay/discover/node/NodeManager.java	51.57% <0%> (-0.63%)	24% <0%> (ø)

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