Refactor http client for unix sockets

[aledbf]

What this PR does / why we need it:

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

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@@           Coverage Diff            @@
##             master   #4334   +/-   ##
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  Coverage          ?   58.5%           
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  Files             ?      87           
  Lines             ?    6528           
  Branches          ?       0           
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  Hits              ?    3819           
  Misses            ?    2281           
  Partials          ?     428

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[ElvinEfendi]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, ElvinEfendi

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