bisect-kit: Check and recover local_test_runner

The /usr/local/bin/local_test_runner can occasionally disappear after running a test. All evaluation script should check and recover the local_test_runner binary.
Also the repair function is modified to reflash the prebuilt version
instead of the release version.

BUG=b:329003548
TEST=./run_tests.sh

Change-Id: I241bed91a99f3aa7ceb3ba18db10e8921502a645
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bisect-kit/+/5373975
Reviewed-by: Cheng-Yu Lee <cylee@google.com>
Commit-Queue: MD Nayeem Jahan Rafi <njrafi@chromium.org>
Tested-by: MD Nayeem Jahan Rafi <njrafi@chromium.org>
6 files changed