Update Release note and prepare 1.9.4 release (#5604)

* Update Release note and prepare 1.9.4 release

This PR updates release notes and prepare 1.9.4 release

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Remove spaces

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Add additional note for header plugin change.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

coremain/version.go

@@ -2,7 +2,7 @@ package coremain
 
 // Various CoreDNS constants.
 const (
-	CoreVersion = "1.9.3"
+	CoreVersion = "1.9.4"
 	coreName    = "CoreDNS"
 	serverType  = "dns"
 )

notes/coredns-1.9.4.md

@@ -0,0 +1,59 @@
++++
+title = "CoreDNS-1.9.3 Release"
+description = "CoreDNS-1.9.4 Release Notes."
+tags = ["Release", "1.9.4", "Notes"]
+release = "1.9.4"
+date = "2022-09-07T00:00:00+00:00"
+author = "coredns"
++++
+
+This is a release with many new features. The most notable addition is a new plugin tsig for validating
+TSIG requests and signing responses. In header plugin a selector of `query` or `response` (default) is added for
+applying the actions. This release also adds lots of enhancements and bug fixes.
+
+## Brought to You By
+
+Abirdcfly
+Alex
+AndreasHuber-CH
+Andy Lindeman
+Chris O'Haver
+Christoph Heer
+Konstantin Demin
+Marius Kimmina
+Md Sahil
+Ondřej Benkovský
+Shane Xie
+TomasKohout
+Vancl
+Yong Tang
+
+
+## Noteworthy Changes
+
+* core: add log listeners for k8s_event plugin (https://github.com/coredns/coredns/pull/5451)
+* core: log DoH HTTP server error logs in CoreDNS format (https://github.com/coredns/coredns/pull/5457)
+* core: warn when domain names are not in RFC1035 preferred syntax (https://github.com/coredns/coredns/pull/5414)
+* plugin/acl: add support for extended DNS errors (https://github.com/coredns/coredns/pull/5532)
+* plugin/cache: add cache disable option (https://github.com/coredns/coredns/pull/5540)
+* plugin/cache: add metadata for wildcard record responses (https://github.com/coredns/coredns/pull/5308)
+* plugin/cache: add option to adjust SERVFAIL response cache TTL (https://github.com/coredns/coredns/pull/5320)
+* plugin/cache: correct responses to Authenticated Data requests (https://github.com/coredns/coredns/pull/5191)
+* plugin/file: add metadata for wildcard record responses (https://github.com/coredns/coredns/pull/5308)
+* plugin/forward: enable multiple forward declarations (https://github.com/coredns/coredns/pull/5127)
+* plugin/forward: health_check needs to normalize a specified domain name (https://github.com/coredns/coredns/pull/5543)
+* plugin/forward: remove unused coredns_forward_sockets_open metric (https://github.com/coredns/coredns/pull/5431)
+* plugin/header: add support for query modification (https://github.com/coredns/coredns/pull/5556)
+* plugin/health: bypass proxy in self health check (https://github.com/coredns/coredns/pull/5401)
+* plugin/health: don't go lameduck when reloading (https://github.com/coredns/coredns/pull/5472)
+* plugin/k8s_external: add support for PTR requests (https://github.com/coredns/coredns/pull/5435)
+* plugin/k8s_external: resolve headless services (https://github.com/coredns/coredns/pull/5505)
+* plugin/kubernetes: make kubernetes client log in CoreDNS format (https://github.com/coredns/coredns/pull/5461)
+* plugin/ready: reset list of readiness plugins on startup (https://github.com/coredns/coredns/pull/5492)
+* plugin/rewrite: add PTR records to supported types (https://github.com/coredns/coredns/pull/5565)
+* plugin/rewrite: fix a crash in rewrite plugin when rule type is missing (https://github.com/coredns/coredns/pull/5459)
+* plugin/rewrite: fix out-of-index issue in rewrite plugin (https://github.com/coredns/coredns/pull/5462)
+* plugin/rewrite: support min and max TTL values (https://github.com/coredns/coredns/pull/5508)
+* plugin/trace : make zipkin HTTP reporter more configurable using Corefile (https://github.com/coredns/coredns/pull/5460)
+* plugin/trace: read trace context info from headers for DOH (https://github.com/coredns/coredns/pull/5439)
+* plugin/tsig: add new plugin TSIG for validating TSIG requests and signing responses (https://github.com/coredns/coredns/pull/4957)