optimize destinationRule generate

[johnlanni]

Ⅰ. Describe what this PR did

Previously, we would also create DR for the HTTP protocol, which is actually meaningless. Moreover, recalculating the DR may cause the port sorting to change during list configstore, triggering a full push. This is also optimized.

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-commenter]

Codecov Report

Attention: 11 lines in your changes are missing coverage. Please review.

Comparison is base (a71ecf4) 38.08% compared to head (a0912c7) 38.07%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #782      +/-   ##
==========================================
- Coverage   38.08%   38.07%   -0.02%     
==========================================
  Files          61       61              
  Lines       10323    10337      +14     
==========================================
+ Hits         3932     3936       +4     
- Misses       6091     6101      +10     
  Partials      300      300              

Files	Coverage Δ
pkg/ingress/kube/annotations/upstreamtls.go	79.46% <100.00%> (+0.76%)	⬆️
pkg/ingress/config/ingress_config.go	13.45% <0.00%> (-0.12%)	⬇️