Add net.dns system properties

Some apps rely on them.

bug: 14992618
Change-Id: I5766f26b77004e9cfcc90fac657817eab67f9ac7
1 file changed
tree: a49e2fa0488b55a57dd1e8dcbe6a60d89d244607
  1. core/
  2. services/
  3. tests/