Add IPv6 DualStack Support For Terway

[l1b0k]

#208

[codecov-commenter]

Codecov Report

Merging #255 (02ed29e) into main (fe47998) will increase coverage by 0.05%.
The diff coverage is 3.42%.

@@           Coverage Diff            @@
##            main    #255      +/-   ##
========================================
+ Coverage   4.94%   4.99%   +0.05%     
========================================
  Files         93      91       -2     
  Lines       9147    9111      -36     
========================================
+ Hits         452     455       +3     
+ Misses      8665    8625      -40     
- Partials      30      31       +1     

Flag	Coverage Δ
unittests	4.99% <3.42%> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cmd/terway/main.go	0.00% <0.00%> (ø)
daemon/context.go	0.00% <0.00%> (ø)
daemon/eip.go	0.00% <0.00%> (ø)
daemon/eni-multi-ip.go	0.00% <0.00%> (ø)
daemon/k8s.go	0.00% <0.00%> (ø)
daemon/veth.go	0.00% <ø> (ø)
pkg/aliyun/aliyun.go	0.00% <0.00%> (ø)
pkg/aliyun/credential/sts.go	0.00% <0.00%> (ø)
pkg/aliyun/ecs.go	0.00% <0.00%> (ø)
pkg/aliyun/eip.go	0.00% <0.00%> (ø)
... and 26 more

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