cherry-pick: tweak: allows prom addr with http path (#1563)

[mornyx]

cherry pick #1563

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release@c088112). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             release    #1571   +/-   ##
==========================================
  Coverage           ?   24.76%           
==========================================
  Files              ?      168           
  Lines              ?    14998           
  Branches           ?        0           
==========================================
  Hits               ?     3714           
  Misses             ?    11010           
  Partials           ?      274           

Flag	Coverage Δ
backend_integration	9.03% <0.00%> (?)
backend_ut	26.78% <0.00%> (?)

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