Unremove DnsResolver#query method used by external developers

This method was removed as part of addressing API council feedback in b/129261432
Add back previous DnsResolver#query which is already being used by developers.

Bug: 129395490
Test: atest DnsResolverTest

Change-Id: Ic956db204f3940d39d42e1b11dda39e57d356fad
1 file changed
tree: 0f46d77829525857bc2dc630b6e8d185e1cdeefd
  1. core/
  2. services/
  3. tests/