When maven settings.xml has a proxy, it's propagated to system properties and picked up by anyone using http

To reproduce:
1) Add proxy to your maven settings.xml (E.g. ~/.m2/settings.xml file)
2) Start servicemix
3) Install webconsole
4) Try to install any bundle at mvn: uri
5) Check in webconsole Configuration Status -> System Properties
6) Be very surprised to find http.nonProxyHosts,http.proxyHost and http.proxyPort properties with values from your settings.xml