Configuration based nonProxyHosts (or switch off proxy by config)

The method
`com.sforce.ws.transport.JdkHttpTransport.createConnection(ConnectorConfig, URL, HashMap, boolean)`
does not consider any nonProxyHost configurations.
The
`com.sforce.ws.ConnectorConfig`
just has proxy and no config for nonProxyHost.

(even `-Dhttp.nonProxyHosts=test.salesforce.com` did not help).

We need the nonProxyHosts to support running locally (with proxy) and in cloudhub.io (without proxy).
Either a solution based on systemProperties or Mule-Config property files would help.

(Workaround: Change `sfdc:config` manually - and do not commit it ;-)
With proxy:
``

Without:
``