fix: fix weird host assignemnt in k8s yaml

[JoanFM]

Goals:

• resolves #ISSUE-NUMBER

• ...

• ...

• ...

• ...

• check and update documentation. See guide and ask the team.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.02% 🎉

Comparison is base (482639a) 77.02% compared to head (af03861) 77.04%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6051      +/-   ##
==========================================
+ Coverage   77.02%   77.04%   +0.02%     
==========================================
  Files         145      145              
  Lines       13901    13879      -22     
==========================================
- Hits        10707    10693      -14     
+ Misses       3194     3186       -8     

Flag	Coverage Δ
jina	77.04% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
jina/orchestrate/deployments/config/k8s.py	100.00% <100.00%> (ø)
...deployments/config/k8slib/kubernetes_deployment.py	84.31% <100.00%> (+21.30%)	⬆️

... and 3 files with indirect coverage changes

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