Make attestation_test_host.py python3-compliant am: a4cdf26230 am: f99cc020dd am: 96c8762939

Original change: https://android-review.googlesource.com/c/platform/tools/security/+/1814111

Change-Id: Icd1a09cce4187fd059be508b69f1acb05317c76b
tree: bd1cd061a2d39943ce45235dd6b23b61042bfaa4
  1. fuzzing/
  2. gdb/
  3. remote_provisioning/
  4. sanitizer-status/
  5. CleanSpec.mk
  6. OWNERS