fix: automatically detect dns lookup family for cp cluster

[slonka]

Signed-off-by: slonka slonka@users.noreply.github.com

Summary

An alternative to #4264. Instead of allowing the user to configure DnsLooupFamily we run a query in kuma-dp and determine it ourselves.

Full changelog

• Implement dnsLookupFamilyFromXdsHost which looks up XdsHost IPs and sets DnsLooupFamily accordingly

Issues resolved

Fix #2000

Documentation

• No additional docs

Testing

• Unit tests
• E2E tests
• Manual testing on Universal
• Manual testing on Kubernetes

Backwards compatibility

• No breaking changes
• doesn't meet backporting criteria

[codecov-commenter]

Codecov Report

Merging #4275 (df367b6) into master (1f12a16) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4275      +/-   ##
==========================================
+ Coverage   55.34%   55.41%   +0.07%     
==========================================
  Files         941      941              
  Lines       57087    57101      +14     
==========================================
+ Hits        31593    31643      +50     
+ Misses      22975    22953      -22     
+ Partials     2519     2505      -14     

Impacted Files	Coverage Δ
pkg/xds/bootstrap/template_v3.go	99.21% <100.00%> (+0.04%)	⬆️
pkg/core/resources/manager/cache.go	85.71% <0.00%> (-2.60%)	⬇️
pkg/xds/generator/direct_access_proxy_generator.go	90.80% <0.00%> (+1.14%)	⬆️
pkg/plugins/resources/postgres/store.go	76.37% <0.00%> (+1.68%)	⬆️
pkg/api-server/server.go	87.44% <0.00%> (+2.09%)	⬆️
pkg/core/secrets/manager/global_manager.go	42.42% <0.00%> (+3.03%)	⬆️
pkg/defaults/components.go	85.71% <0.00%> (+3.57%)	⬆️
...s/authn/api-server/tokens/admin_token_bootstrap.go	86.00% <0.00%> (+4.00%)	⬆️
pkg/core/tokens/signing_key_manager.go	90.00% <0.00%> (+5.00%)	⬆️
pkg/core/runtime/component/component.go	93.54% <0.00%> (+9.67%)	⬆️
... and 4 more

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[lahabana]

LGTM thx for finding a way to get rid of the parameter

[michaelbeaumont]

LGTM