fix(ci-broker.md): drop bashism: set -o pipefail.
On a machine where /bin/sh it not Bash, the pipefail setting will fail.
Signed-off-by: Lars Wirzenius liw@liw.fi
On a machine where /bin/sh it not Bash, the pipefail setting will fail.
Signed-off-by: Lars Wirzenius liw@liw.fi