[Telemetry] Allow tests to run on 64-bit devices.
[Telemetry] Allow tests to run on 64-bit devices.

Volantis reports its architecture as a string beginning with 'arm64', which is
different from the previous convention of devices reporting strings beginning
with 'armeabi'.

This CL extends the check to include arm64 devices, which we now build for.

BUG=464724
R=nednguyen
TEST=run_benchmark list/run work on a 64-bit device.

Review URL: https://codereview.chromium.org/1078883002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#324532}

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