Description of problem:
Enabling repo on satellite 6.7 fails with " 407 Proxy Auth Required " in spite of having correct proxy details set on satellite.

Manifest refresh, insights, repo sync works fine but enabling a repo fails.


In the file /opt/theforeman/tfm/root/usr/share/gems/gems/katello-3.14.0.20/app/lib/katello/resources/cdn.rb

        def net_http_class
          if (proxy = ::HttpProxy.default_global_content_proxy)
            uri = URI(proxy.url) #Net::HTTP::Proxy ignores port as part of the url
            Net::HTTP::Proxy("#{uri.host}#{uri.path}", uri.port, proxy.username, proxy.password)
          else
            Net::HTTP
          end
        end

proxy.username here returns empty '', instead of nil which is causing the issue for the customer.

 [17:45:44] mjia: proxy = ::HttpProxy.default_global_content_proxy
[17:45:44] mjia: => #<HttpProxy id: 2, name: "Local CNTLM instance", url: "https://10.10.10.10", username: "", password: "">
[17:45:44] mjia: irb(main):002:0> proxy.username
[17:45:44] mjia: => ""

This seems like a regression as 6.6 seems like using nil for proxy.username.


Below workaround fixed the issue:

# foreman-rake console

proxy = ::HttpProxy.default_global_content_proxy

proxy.update_attributes!(username: nil, password: nil)

exit


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