* Detail metrics rename in the notes
Signed-off-by: Miek Gieben <miek@miek.nl>

* Update notes/coredns-1.7.0.md
Co-Authored-By: Ben Kochie <superq@gmail.com>

* More words

Details and fix the metric name change and add words on the federation
plugin as well.
Signed-off-by: Miek Gieben <miek@miek.nl>

* Add dns64 plugin
Signed-off-by: Miek Gieben <miek@miek.nl>
Co-authored-by: Ben Kochie <superq@gmail.com>