release: add 1.8.3 release notes (#4485)

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

notes/coredns-1.8.3.md

++++
+title = "CoreDNS-1.8.3 Release"
+description = "CoreDNS-1.8.3 Release Notes."
+tags = ["Release", "1.8.3", "Notes"]
+release = "1.8.3"
+date = 2021-02-24T07:00:00+00:00
+author = "coredns"
++++
+
+The CoreDNS team has released
+[CoreDNS-1.8.3](https://github.com/coredns/coredns/releases/tag/v1.8.3). This release includes a
+bunch of bugfixes and a few enhancements, see below.
+
+In case you're wondering, 1.8.2 didn't properly upload and tag the docker images, hence a quick
+followup release with that fixed.
+
+## Brought to You By
+
+Bob,
+chantra,
+Chris O'Haver,
+Frank Riley,
+George Shammas,
+Johnny Bergström,
+Jun Chen,
+Lars Ekman,
+Manuel Rüger,
+Maxime Ginters,
+Miek Gieben,
+slick-nic,
+TimYin.
+
+## Noteworthy Changes
+
+* core: Also clear `do` and `size` (https://github.com/coredns/coredns/pull/4465)
+* core: Flag blacklisting not needed anymore (https://github.com/coredns/coredns/pull/4420)
+* core: Set http request in writer (https://github.com/coredns/coredns/pull/4445)
+* Makefile.release: Replace manifest-tool with docker manifest (https://github.com/coredns/coredns/pull/4421)
+* Makefile.release: Fix the Makefile (https://github.com/coredns/coredns/pull/4483)
+* 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: Corrected detection of K8s minor version (https://github.com/coredns/coredns/pull/4430)
+* plugin/kubernetes: make kubeconfig argument 'context' optional (https://github.com/coredns/coredns/pull/4451)
+* plugin/rewrite: copy msg before rewriting (https://github.com/coredns/coredns/pull/4443)
+* plugin/rewrite: SRV targets and additional names in response (https://github.com/coredns/coredns/pull/4287)
+* 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)