[automerger skipped] Backport: Fix the side channel attack by using async...

[automerger skipped] Backport: Fix the side channel attack by using async DnsResolver API with FLAG_NO_CACHE_STORE am: 91945c82 am: dc5c4b72 -s ours am: 658159ba am: 7114a3fa

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/netd/+/12085954

Change-Id: Icbbc9f7e9809dbd5eede1c5dcf852abc82cf44e9