Need to register dbus metatypes to have them work correctly.

Change-Id: Ic994a0747c692fffe8a986eba6f754a6c0eddfa8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/plugins/bearer/connman/qconnmanservice_linux.cpp

@@ -81,6 +81,8 @@ QConnmanManagerInterface::QConnmanManagerInterface( QObject *parent)
                                  CONNMAN_MANAGER_INTERFACE,
                                  QDBusConnection::systemBus(), parent)
 {
+    qDBusRegisterMetaType<ConnmanMap>();
+    qDBusRegisterMetaType<ConnmanMapList>();
 }
 
 QConnmanManagerInterface::~QConnmanManagerInterface()