[automerger skipped] [DO NOT MERGE] Reject non-ASCII hostnames and SANs. am: c247f14ad5 am: 2954a29740 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/libcore/+/13163676

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I339b9a41f714ed3806a4a1f527875f286ca181e4