ClearCase: Fix plugin unit tests

This function is called by QMetaObject::invokeMethod.

Broke with f62663e8e4.

Change-Id: I0efc2f24043e0313d500840e6022f3d73ca8a127
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/clearcase/clearcaseplugin.h

@@ -200,7 +200,7 @@ public slots:
 private:
     void annotateVersion(const QString &workingDirectory, const QString &file, const QString &revision, int lineNumber);
     void syncSlot();
-    void updateStatusActions();
+    Q_INVOKABLE void updateStatusActions();
 
     void checkOutCurrentFile();
     void addCurrentFile();