[WIP] k8s workflow tests

[rebelArtists]

Description

introduce low-cost, virtualized posv1 kubernetes-based devnets (ephemeral for regression testing purposes of new client version [imagine integrated as part of final code confidence checks before public release of heimdall / bor / erigon / zk / etc ])

Purpose

maximum developer simplicity: full dev ssh access to pos devnet virtual machines, automatic stress and load tests applied to ephemeral devnets via polycli, configurable bake time by devs, and much more.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 55.90%. Comparing base (241af1f) to head (959e8b1). Report is 366 commits behind head on master.

:exclamation: Current head 959e8b1 differs from pull request most recent head 3572116

Please upload reports for the commit 3572116 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1168      +/-   ##
==========================================
- Coverage   55.92%   55.90%   -0.02%     
==========================================
  Files         658      658              
  Lines      114440   114496      +56     
==========================================
+ Hits        63996    64010      +14     
- Misses      46601    46626      +25     
- Partials     3843     3860      +17     

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[avalkov]

Can you please open PR to develop.