the cfg.xml is now parked in modules/api/src/parked/cfg.xsd

when enabling it, make sure all the configuration constructs like import are also supported.

1) the xsd should reviewed to match what the org.jbpm.pvm.internal.env.JbpmConfigurationParser parses
2) the namespace should be updated to http://jbpm.org/4.0/cfg

@see also org.jbpm.pvm.internal.wire.binding.WireBinding. that has a reference to the namespace that needs to be updated