docs(*): added proposal of PSAT

[lukidzi]

Summary

A proposal on how can we reload the token to authenticate with kuma-cp.
#4121

Full changelog

• [Implement ...]
• [Fix ...]

Issues resolved

Documentation

• Link to the website documentation PR

Testing

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

Backwards compatibility

• Update UPGRADE.md with any steps users will need to take when upgrading.
• Add backport-to-stable label if the code follows our backporting policy

[lahabana]

We're meant to move to MADR: https://github.com/kumahq/kuma/tree/master/docs/madr :)

[lukidzi]

We're meant to move to MADR: https://github.com/kumahq/kuma/tree/master/docs/madr :)

True, forgot about this. Moved to the new model

[lahabana]

Makes sense. It's a simple pragmatic fix.

[codecov-commenter]

Codecov Report

Merging #4432 (446e703) into master (9770154) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4432      +/-   ##
==========================================
+ Coverage   55.52%   55.53%   +0.01%     
==========================================
  Files         941      941              
  Lines       57681    57681              
==========================================
+ Hits        32028    32036       +8     
+ Misses      23112    23104       -8     
  Partials     2541     2541              

Impacted Files	Coverage Δ
...s/authn/api-server/tokens/admin_token_bootstrap.go	82.00% <0.00%> (-4.00%)	⬇️
pkg/core/resources/manager/cache.go	85.71% <0.00%> (-2.60%)	⬇️
pkg/xds/generator/direct_access_proxy_generator.go	89.65% <0.00%> (-1.15%)	⬇️
pkg/plugins/runtime/gateway/route/sorter.go	71.79% <0.00%> (+5.12%)	⬆️
pkg/clusterid/creator.go	100.00% <0.00%> (+13.33%)	⬆️
pkg/plugins/resources/postgres/events/listener.go	31.25% <0.00%> (+14.58%)	⬆️
pkg/plugins/common/postgres/listener.go	69.23% <0.00%> (+15.38%)	⬆️

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