[automerger skipped] [RESTRICT AUTOMERGE]: Add STS annotations to EphemeralTest am: b0fc958568 -s ours am: d9a2f20cff -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/12948021

Change-Id: Id54685fba5d677148f8e1e14f521d54b4af5a94a