Init k8s client if needed

[YevheniiSemendiak]

part of https://github.com/neuro-inc/no-code/issues/103

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@a9d6d14). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #441   +/-   ##
=========================================
  Coverage          ?   89.87%           
=========================================
  Files             ?        7           
  Lines             ?      573           
  Branches          ?       57           
=========================================
  Hits              ?      515           
  Misses            ?       41           
  Partials          ?       17           

Flag	Coverage Δ
integration	83.24% <0.00%> (?)
unit	30.54% <0.00%> (?)

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