Add set pipefail in most framework scripts.

set pipefail changes the pipeline return status from being the return
status of the last command to the last non 0 exit status of any command
in the pipeline. This is needed to make sure all the commands in a
pipeline did actually return a non 0 status and not only the last one.

PR: 250723
Exp-run by: antoine
Reviewed by: bapt
Approved by: bapt
Differential Revision: https://reviews.freebsd.org/D27007