Only add an OutputLevel if Verbosity is set (#205)

Unlike Marlin Gaudi doesn't override OutputLevels of Algorithms if they
have been manually set in the options file. Hence, if we populate all
wrapped processor OutputLevels it will require changing all of them
manually afterwards if we want the global OutputLevel that is set in the
AlgorithmMgr to apply.

k4MarlinWrapper/scripts/convertMarlinSteeringToGaudi.py

@@ -221,7 +221,9 @@ def verbosityTranslator(marlinLogLevel):
 def convertParameters(params, proc, globParams, constants):
   """ convert json of parameters to gaudi """
   lines = []
-  lines.append("%s.OutputLevel = %s" % (proc.replace(".", "_"), verbosityTranslator(globParams.get("Verbosity"))))
+  if "Verbosity" in params:
+    lines.append("%s.OutputLevel = %s" % (proc.replace(".", "_"), verbosityTranslator(params["Verbosity"])))
+
   lines.append("%s.ProcessorType = \"%s\"" % (proc.replace(".", "_"), params.get("type")))
   lines.append("%s.Parameters = {" % proc.replace(".", "_"))
   for para in sorted(params):