[ci] Add partial LUCI Android platform tests #4381
Merged
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Adds an initial Android platform tests LUCI script, and initial targets in bringup mode (using 6 shards instead of the 8 we have in Cirrus since the added shards were to try to address what in retrospect was likely a device availability issue, and since for now this will be running fewer tests; once everything is migrated we can evaluate whether we need more shards).
Rather than wait for emulator and/or FTL support in LUCI to do the migration of this target, this will partially migrate; the script currently does only the parts that don't require any kind of device. That will let us set up a baseline of LUCI Android platform tests bots to easily expand from as we figure out those pieces, and we can turn down these parts of the tests in Cirrus once these come out of bringup mode to minimize duplication.
To avoid having to run a full
flutter buildfor both versions, this also updates the repo tooling to use the newflutter build apk --config-onlyoption to creategradlewwithout doing a full build.Part of flutter/flutter#114373