Add 1.8.2 notes (#4461)

Makefile.release

@@ -18,7 +18,7 @@
 # Steps to release, first:
 #
 # 1. Up the version in coremain/version.go
-# 2. Do a make -f Makefile.doc
+# 2. Do a make -f Makefile.doc # This has been automated in GitHub, so you can probably skip this step
 # 3. go generate
 # 4. Send PR to get this merged.
 #
@@ -44,7 +44,7 @@ EMPTY:=
 SPACE:=$(EMPTY) $(EMPTY)
 COMMA:=$(EMPTY),$(EMPTY)
 
-ifeq (, $(shell command -v curl))
+ifeq (, $(shell which curl))
     $(error "No curl in $$PATH, please install")
 endif
 

notes/coredns-1.8.2.md

++++
+title = "CoreDNS-1.8.2 Release"
+description = "CoreDNS-1.8.2 Release Notes."
+tags = ["Release", "1.8.2", "Notes"]
+release = "1.8.2"
+date = 2021-01-20T07:00:00+00:00
+author = "coredns"
++++
+
+The CoreDNS team has released
+[CoreDNS-1.8.2](https://github.com/coredns/coredns/releases/tag/v1.8.2).
+
+## Brought to You By
+
+Bob,
+Chris O'Haver,
+Frank Riley,
+George Shammas,
+Jun Chen,
+Lars Ekman,
+Manuel Rüger,
+Maxime Ginters,
+Miek Gieben,
+TimYin.
+
+## Noteworthy Changes
+
+* core: flag blacklisting not needed anymore (https://github.com/coredns/coredns/pull/4420)
+* Corrected detection of K8s minor version (https://github.com/coredns/coredns/pull/4430)
+* Makefile.release: Replace manifest-tool with docker manifest (https://github.com/coredns/coredns/pull/4421)
+* plugin/acl: add the ability to filter records (https://github.com/coredns/coredns/pull/4389)
+* plugin/dnstap: Fix out of order messages and fix forward perspective. (https://github.com/coredns/coredns/pull/4395)
+* plugin/forward Add rcode and rtype to request_duration_seconds metric (https://github.com/coredns/coredns/pull/4391)
+* plugin/kubernetes: make kubeconfig argument 'context' optional (https://github.com/coredns/coredns/pull/4451)
+* plugin/rewrite: copy msg before rewritting (https://github.com/coredns/coredns/pull/4443)
+* plugin/sign: track zone file's mtime (https://github.com/coredns/coredns/pull/4431)
+* plugin/trace: Use compatible tag name for datadog (https://github.com/coredns/coredns/pull/4408)
+* plugin/transfer: only allow outgoing axfr over tcp (https://github.com/coredns/coredns/pull/4452)