Move telemetry_unittests to the main waterfall kevin tester.

Looks good on the fyi bot: (ignore the conformance test failures)
https://luci-milo.appspot.com/p/chromium/builders/ci/chromeos-kevin-rel-hw-tests

Bug: 938502
Change-Id: Ifa886afb5c44134d14170fd5967e1ab7d9c89916
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1708753
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Commit-Queue: John Budorick <jbudorick@chromium.org>
Auto-Submit: Ben Pastene <bpastene@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#678743}
4 files changed