Update the 1.7.1 notes (#4086)
Update the 1.7.1 notes (#4086)

* Update the 1.7.1 notes

Add bunch of PR, remote the text that should show up in the 1.8.0
release.

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

* Update notes/coredns-1.7.1.md

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

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