Add hosts for detached steps

[qwerty287]

closes #4627

@stevapple Once the CI finished, can you test this with the PR tag?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 28.16%. Comparing base (d126cf9) to head (c58fa62).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
pipeline/backend/kubernetes/kubernetes.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4674   +/-   ##
=======================================
  Coverage   28.16%   28.16%           
=======================================
  Files         398      398           
  Lines       28205    28205           
=======================================
  Hits         7944     7944           
  Misses      19555    19555           
  Partials      706      706           

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[stevapple]

@qwerty287 While I cannot test this in production, it looks fairly correct to me👍

[woodpecker-bot]

Tearing down https://woodpecker-ci-woodpecker-pr-4674.surge.sh