Add preliminary notes for 1.8.4 (#4535)
Add preliminary notes for 1.8.4 (#4535)

* Add preliminary notes for 1.8.4

Draft notes for 1.8.4

Signed-off-by: Miek Gieben <00b357f94cf3a1145a32703fb42e2d80418ab806@miek.nl>

* Update notes/coredns-1.8.4.md

Co-authored-by: Chris O'Haver <c8d69f6e0f4a592980d82af78b0efddff3dcc387@infoblox.com>

* Update notes/coredns-1.8.4.md

Co-authored-by: Chris O'Haver <c8d69f6e0f4a592980d82af78b0efddff3dcc387@infoblox.com>

* Update notes/coredns-1.8.4.md

Co-authored-by: Chris O'Haver <c8d69f6e0f4a592980d82af78b0efddff3dcc387@infoblox.com>

Co-authored-by: Chris O'Haver <c8d69f6e0f4a592980d82af78b0efddff3dcc387@infoblox.com>
chrisohaver/coredns,coredns/coredns,yongtang/coredns