Donwloading JIRA reports doesn't work inside a local network with http proxy, even if the JIRA-host is configured as <nonProxyHosts /> in the settings.xml.
[INFO] Generating "JIRA Report" report.
[INFO] Downloading from JIRA at: http://<JIRA-host>/jira/secure/IssueNavigator.jspa?view=rss&pid=10062&statusIds=6&resolutionIds=1&sorter/field=created&sorter/order=DESC&sorter/field=priority&sorter/order=DESC&tempMax=100&reset=true&decorator=none
[WARNING] Downloading from JIRA failed. Received: 
[WARNING] JIRA file /home/vr/vr4build/build-env/data/jenkins/data/jobs/Generator Maven Plug-ins Nightly/workspace/target/jira-results.xml doesn't exist.