[automerger skipped] Backport: Fix the side channel attack by using async DnsResolver API with FLAG_NO_CACHE_STORE am: 91945c82ec am: dc5c4b7224 -s ours

am skip reason: skipped by user huangluke

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

Change-Id: I3cf26d153b4d3525107f6e8a452a90690356790a