add v6 support for AddMissingPort function

[welkeyever]

What type of PR is this?

fix

What this PR does / why we need it (English/Chinese):

EN: add support for bare v6 address in AddMissingPort function
ZH：AddMissingPort函数增加对裸v6地址的处理

[codecov]

Codecov Report

Merging #203 (94bebf8) into develop (8697481) will decrease coverage by 0.04%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #203      +/-   ##
===========================================
- Coverage    59.03%   58.98%   -0.05%     
===========================================
  Files           79       79              
  Lines         7997     7998       +1     
===========================================
- Hits          4721     4718       -3     
- Misses        2928     2932       +4     
  Partials       348      348              

Impacted Files	Coverage Δ
pkg/common/utils/path.go	82.60% <100.00%> (+0.51%)	⬆️
pkg/common/timer/timer.go	61.90% <0.00%> (-19.05%)	⬇️
pkg/network/standard/buffer.go	81.08% <0.00%> (-0.50%)	⬇️

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