Ios: standardize IosRunConfiguration::initialize() signature

Most other signatures look like RunConfiguration::initialize(Core::Id),
this here is part of unifying them completely.

Change-Id: I7cd2acc8ebe6ec8cef05272f18f0fa5ded94f930
Reviewed-by: Vikas Pachdha <vikas.pachdha@qt.io>

src/plugins/ios/iosconstants.h

@@ -50,5 +50,7 @@ const quint16 IOS_SIMULATOR_PORT_END = 31000;
 
 const char EXTRA_INFO_KEY[] = "extraInfo";
 
+const char IOS_RC_ID_PREFIX[] = "Qt4ProjectManager.IosRunConfiguration:";
+
 } // namespace Constants;
 } // namespace Ios