chore(*): added test checking tcp healthCheck with permissive mtls

[lukidzi]

Summary

Added test which validates that TCP healthCheck on universal with MTLS in Permissive mode is not affected.

• [X] Link to docs PR or issue -- none
• [X] Link to UI issue or PR -- none
• [X] Is the [issue worked on linked][1]? -- closes #2651
• [X] Unit Tests -- none
• [X] E2E Tests --
• [X] Manual Universal Tests --
• [X] Manual Kubernetes Tests --
• [X] Do you need to update UPGRADE.md? -- none
• [X] Does it need to be backported according to the backporting policy? -- none

[codecov-commenter]

Codecov Report

Merging #4789 (bf253d1) into master (ad3258f) will decrease coverage by 0.00%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4789      +/-   ##
==========================================
- Coverage   46.38%   46.37%   -0.01%     
==========================================
  Files         690      690              
  Lines       46942    46942              
==========================================
- Hits        21772    21770       -2     
- Misses      23248    23249       +1     
- Partials     1922     1923       +1     

Impacted Files	Coverage Δ
pkg/xds/cache/once/cache.go	87.17% <0.00%> (-7.70%)	:arrow_down:
pkg/defaults/components.go	53.33% <0.00%> (-3.34%)	:arrow_down:
pkg/xds/generator/direct_access_proxy_generator.go	90.90% <0.00%> (+1.13%)	:arrow_up:
pkg/core/resources/manager/cache.go	88.31% <0.00%> (+2.59%)	:arrow_up:

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