Further RE testing
Description
Adds some extra stuff we weren't testing in RE before, checking off three of the tasks in #994.
Tests added in the MR:
- Remote build with junction
- Remote build with buildtree
- Remote build for something that fails
This also adds a small fix to script elements, where processing the job output didn't work when it failed.
This merge request, goes towards closing #994. To close this we still want an extra test of something bigger than autotools.
Edited by Raoul Hidalgo Charman