samples: net: dns: Add mDNS client support to DNS resolver sample

The DNS resolver example enables mDNS client support and then
queries zephyr.local hostname. The net-tools project has example
avahi-daemon script that will response these .local queries and
can be used in testing.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
3 files changed