testplans: Actually read errors, deflake tests

I was previously forgetting to read the errors from retried calls.
I also previously had a test with two items in a map, and the test would
sometimes fail because of the iteration order of items in the map. The
test only really needs one item in the map.

TEST=unit tests

Change-Id: I77b2a70ee994457940967020e814f5cf5f5bfc22
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/test_planner/+/1613765
Reviewed-by: David Burger <dburger@chromium.org>
Commit-Queue: Sean Abraham <seanabraham@chromium.org>
Tested-by: Sean Abraham <seanabraham@chromium.org>
3 files changed
tree: 5e1d2078a552c3a856a6c0a092bf3fccf8249a05
  1. .gitignore
  3. cipd.yaml
  4. deploy_cipd.json
  5. deploy_cipd.sh
  6. src/