libnetd_resolv, resolv_stress_test - switch to dnsresolver_aidl_interface-unstable-ndk_platform

This is needed to resolve aidl version mismatch.

Test: builds
Bug: 157869568
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Id2d57f9e0b8ecb5b47c9c9bf78e5aa69c771bfe2