toolchain-utils: fix a unittest failure in cros_utils

no_pseudo_terminal_test always failed when running tests in
toolchain-utils. This is caused by that strace cannot run without sudo
permision. This patch fixes it.

TEST=Passed unittest.
BUG=None

Change-Id: Ife8f13dc04cd515eff207ea73716e04cbdc7b8b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/1863626
Reviewed-by: George Burgess <gbiv@chromium.org>
Commit-Queue: Zhizhou Yang <zhizhouy@google.com>
Tested-by: Zhizhou Yang <zhizhouy@google.com>
1 file changed