Instead of starting Qt Creator to get a debug server we can just
simulate the hello message on a locally created connection. That is
enough to make the client manager signal "connectionOpened()".
This way we don't get excessive timeouts on this test.
Change-Id: I89fa12b1bdda41a62dec47de042224f26fee79a9
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>