run_tests: Enable profile collection from remote tests
run_tests: Enable profile collection from remote tests

Write profiles to a temp file and download them afterwards.

BUG=b:239255082
TEST=./tools/run_tests --target=vm:aarch64 --generate-lcov=aarch64.lcov

Change-Id: I1c81dd72aadca4cad3310347d94596d45a0e0ede
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3821463
Reviewed-by: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>
Commit-Queue: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>
Tested-by: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>

google/crosvm,google/crosvm,google/crosvm,google/crosvm