notes: update 1.7.1 (#4128)

Updates the notes with latest PRs. I want the cache PR to be included in
this release as well, if possible.

Should release somewhere this week.
Signed-off-by: Miek Gieben <miek@miek.nl>

notes/coredns-1.7.1.md

@@ -22,6 +22,7 @@ Ben Ye,
 Chris O'Haver,
 Cricket Liu,
 Grant Garrett-Grossman,
+Hu Shuai,
 Li Zhijian,
 Maxime Guyot,
 Miek Gieben,
@@ -29,18 +30,26 @@ milgradesec,
 Oleg Atamanenko,
 Olivier Lemasle,
 Ricardo Katz,
+Ruslan Drozhdzh,
 Yong Tang,
 Zhou Hao,
 Zou Nengren.
 
 ## Noteworthy Changes
 
+* backend: fix root zone usage (https://github.com/coredns/coredns/pull/4039)
 * core: Add timeouts for http server (https://github.com/coredns/coredns/pull/3920).
+* pkg/upstream: set edns0 and Do when required (https://github.com/coredns/coredns/pull/4055)
+* plugin/{clouddns,route53}: fix lingering goroutines after restart (https://github.com/coredns/coredns/pull/4096)
+* plugin/debug: Enable debug globally if enabled in any server config (https://github.com/coredns/coredns/pull/4007)
 * plugin/{etcd,kubernetes}: fix root zone usage (https://github.com/coredns/coredns/pull/4039).
+* plugin/forward: add hit/miss metrics for connection cache (https://github.com/coredns/coredns/pull/4114)
+* plugin/forward: fix panic when `expire` is configured as 0s (https://github.com/coredns/coredns/pull/4115)
+* plugin/forward: init ClientSessionCache in tls.Config (https://github.com/coredns/coredns/pull/4108)
 * plugin/forward: Register HealthcheckBrokenCount (https://github.com/coredns/coredns/pull/4021).
 * plugin/grpc: Improve gRPC Plugin when backend is not available (https://github.com/coredns/coredns/pull/3966)
-* plugin/route53: Fix wildcard records issue in route53 plugin (https://github.com/coredns/coredns/pull/4038).
 * plugins: Using promauto package to ensure all created metrics are properly registered (https://github.com/coredns/coredns/pull/4025).
 * plugin/template: Add client IP data (https://github.com/coredns/coredns/pull/4034).
+* plugin/trace: fix struct allignment (https://github.com/coredns/coredns/pull/4112)
 * plugin/trace: Only with *debug* active enable debug mode for tracing - removes extra logging (https://github.com/coredns/coredns/pull/4016).
 * project: Add DCO requirement in Contributing guidelines (https://github.com/coredns/coredns/pull/4008).