v1.10.0

This release updates Buildroot to 2019.11 with security and bug fix updates
across Linux packages. Enables dnsd, udhcpd and ifconfig in the default
Busybox configuration to support vintage_net and vintage_net_wizard.
See the nerves_system_br notes for details.

• Updated dependencies
  • nerves_system_br v1.10.0
  • Erlang 22.1.8