workflow hello.yaml has special path embedded

[dkfellows]

As part of hpcflow/matflow#386, I've been trying to run hello.yaml, but it can't run in the test environment as it embeds a path to a Python file that is not located at that place in the test environment; the path /home/mbexegc2/projects/lightform doesn't exist there.

[gcapes]

Hi @dkfellows
As part of #23 this repo should really be scheduled for decommissioning as the contents move into the offical MatFlow documentation. As such, and also because things outside of the matflow repo will be subject to change without warning, I think that any workflows like this that are used as integration tests for matflow should live in the matflow repo.

With the workflow file existing as a separate file which included as part of the documentation, I think it will be easier to manage the file path.

As such I'm closing this issue because it isn't really a bug, and we should keep things in the matflow repo.