Fix forwarded host parsing #3950
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What this PR does / why we need it:
Sometimes reverse proxies keep appending to
X-Forwarded-Hostheader that results in multiple comma separated value. This PR makes sure we always set a single host to proxy Host header by splitting theX-Forwarded-Hostvalue by comma and taking only the first host in the list.Which issue this PR fixes (optional, in
fixes #<issue number>(, fixes #<issue_number>, ...)format, will close that issue when PR gets merged): fixes #3790Special notes for your reviewer: