Resolving some external entities in Solr/Jetty configuration files currently does not work

Eclipse seems to have switched its website from HTTP to HTTPS.

As a consequence parsing of Solr XML configuration files with a XML parser sometimes runs into errors. E.g. the system ID http://www.eclipse.org/jetty/configure_9_0.dtd does not resolve.

Files affected include

solr/server/etc/jetty-https.xml
solr/server/contexts/solr-jetty-context.xml
solr/server/etc/jetty.xml
solr/server/etc/jetty-http.xml
solr/server/etc/jetty-ssl.xml
solr/server/etc/jetty-requestlog.xml

I do not know whether the problem affects Solr itself, so you might consider this issue as informational.

Also see https://github.com/eclipse/jetty.project/issues/8738