Handle a blank value for the http_proxy host #18073
Merged
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https://bugzilla.redhat.com/show_bug.cgi?id=1637092
We have no way (in the UI) to remove a previously configured http_proxy host
in Settings.yml/advanced settings, so people were forced to save a ''
value. This code was only checking for nil values and should really
check for blank values. It doesn't make sense to reimplement the regex
used by the URI class to parse host values for validity but handling
some obvious blank values make sense here.