What I did was to create a scrum project, and then customized the workflow and statuses to what I wanted.
Once I had that, I created the Board that matched the new workflow I created.
I saved it and then I tried creating a new project using the shared configuration.
The project was created but no board was included. Not even the basic one from Scrum.
Adding the board to the project is possible, but not exactly simple, and I want to avoid that extra step by creating the template