[autotest] Add code in verify and cleanup to remove cros-version label if it doesn't match
Make sure the dut's cros-version label matches the actual version stored in
lsb-release under attribute CHROMEOS_RELEASE_VERSION.
It's added to both cleanup and verify because:
1. If a test failed by dut issue or autoserv crash, cleanup will be queued.
the lab gets a chance to verify the cros-version label before the dut being
assigned to another test.
2. verify is called before each test, so confirming the cros-version label
there is necessary.
The check takes only one ssh call to the dut. Making a duplicated check (reset
calls both cleanup and verify) should not lead too much overhead.
BUG=chromium:469895
TEST=unittest, run local test
1. Add a cros-version label that matches lsb-release, run dummy test, confirm
the label is preserved.
2. Add a cros-version label doesn't match lsb-release, run dummy test, confirm
the label is removed by verify task, and verify job failed.
Change-Id: Ia4760967118f2aacfe5c7f378bb482df7995cef3
Reviewed-on: https://chromium-review.googlesource.com/262390
Trybot-Ready: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Fang Deng <fdeng@chromium.org>
Commit-Queue: Dan Shi <dshi@chromium.org>
Reviewed-by: Chris Sosa <sosa@chromium.org>
7 files changed