missing code info in the hello workflow training (2.3.1)

[rjanky]

Before section 2.3.2. Run the workflow with -resume, we still need to publish the output of collectedGreetings() otherwise we can't see the COLLECTED-output.txt output file in the results folder as expected, but in the work dir.

In section 2.3.1, please add steps to update the publish part of the workflow :

    publish:
    first_output = sayHello.out
    uppercased = convertToUpper.out
    collected = collectGreetings.out

Also need to copy the output :

output {
    first_output {
        path 'hello_workflow'
        mode 'copy'
    }
    uppercased {
        path 'hello_workflow'
        mode 'copy'
    }
    collected {
        path 'hello_workflow'
        mode 'copy'
    }
}