scripts/testbench: add set -e

[marc-hb]

Let's stop ignoring build and test failures. Start gradually with the
scripts involved in testbench, more files later.

Follow-up to to bug #2752 "host-testbench.sh ignores errors" and commit
ab42146 ("CI: Travis: enable host testbnech again") and
ab42146~1

Signed-off-by: Marc Herbert marc.herbert@intel.com

[marc-hb]

I finally root-caused the SPDX checkpatch warning. It's a very funny checkpatch bug.

WARNING: Misplaced SPDX-License-Identifier tag - use line 1 instead

It happens every time you change line 5 of any script = every time you add something at the top of the script. When you do that, the default git diff -U3 includes context with the SPDX line but misses the shebang, its cuts right between the two.

There's no other checkpatch warning in this PR.

sof-ci/jenkins/pr-device-test has a single, unrelated check-runtime-pm-status.sh failure:

kernel: [  560.168513] sof-audio-pci 0000:00:1f.3: error: cl_dsp_init: timeout HDA_DSP_SRAM_REG_ROM_STATUS read

[singalsu]

Looks good, thanks for the improvements!

[dbaluta]

Please add the same comments as below ' fail on errors'

[marc-hb]

Done except I changed it to "stop on most errors". For legacy reasons set -e doesn't catch all errors, it catches most of them.