Bump to version 1.6.9 (#3773)

See #3727 for the details. Copying release notes
verbatim to coredns-1.6.9.md and fix the release script (because
Makefile are stupid). Up version to 1.6.9 here as well.
Signed-off-by: Miek Gieben <miek@miek.nl>

Makefile.release

@@ -118,7 +118,7 @@ github-push:
 	    echo $$asset; \
 	    curl -o /dev/null -X POST \
 	      -H "Content-Type: application/gzip" \
-		  -H "Authorization: token ${GITHUB_ACCESS_TOKEN}"
+	      -H "Authorization: token ${GITHUB_ACCESS_TOKEN}" \
 	      --data-binary "@$$asset" \
 	      "https://uploads.github.com/repos/$(GITHUB)/$(NAME)/releases/$(RELEASE)/assets?name=$${asset}" ; \
 	done )
@@ -129,7 +129,7 @@ github-push:
 	    echo $$asset; \
 	    curl -o /dev/null -X POST \
 	      -H "Content-Type: text/plain" \
-		  -H "Authorization: token ${GITHUB_ACCESS_TOKEN}"
+	      -H "Authorization: token ${GITHUB_ACCESS_TOKEN}" \
 	      --data-binary "@$$asset" \
 	      "https://uploads.github.com/repos/$(GITHUB)/$(NAME)/releases/$(RELEASE)/assets?name=$${asset}" ; \
 	done )

coremain/version.go

@@ -2,7 +2,7 @@ package coremain
 
 // Various CoreDNS constants.
 const (
-	CoreVersion = "1.6.8"
+	CoreVersion = "1.6.9"
 	coreName    = "CoreDNS"
 	serverType  = "dns"
 )

notes/coredns-1.6.9.md

++++
+title = "CoreDNS-1.6.9 Release"
+description = "CoreDNS-1.6.9 Release Notes."
+tags = ["Release", "1.6.9", "Notes"]
+release = "1.6.9"
+date = 2020-03-24T10:00:00+00:00
+author = "coredns"
++++
+
+The CoreDNS team has released
+[CoreDNS-1.6.9](https://github.com/coredns/coredns/releases/tag/v1.6.9). This release is identical
+to 1.6.8.
+
+(Yes there was a [CoreDNS-1.6.8](https://github.com/coredns/coredns/releases/tag/v1.6.8), but our
+automation broke after tagging it in Git - hence another bump in the minor version)
+
+Again a small release with some nice improvements in the *forward* plugin, and overall polish. See
+"Noteworthy Changes" for more detail.
+
+Note that 1.7.0 will contain a bunch of backward incompatible changes: the *federation* plugin will
+be full removed and the metrics name will be changed to inline with the naming recommendation from
+the Prometheus project.
+
+## Brought to You By
+
+Andy Bursavich,
+Chris O'Haver,
+Christian Tryti,
+Darshan Chaudhary,
+Kohei Yoshida,
+LongKB,
+Miek Gieben,
+Ricky S,
+Sylvain Rabot,
+Zou Nengren.
+
+## Noteworthy Changes
+
+* plugin/azure: Add private DNS support for azure plugin (https://github.com/coredns/coredns/pull/1516)
+* plugin/cache: explain drop metric (https://github.com/coredns/coredns/pull/3706)
+* plugin/forward: Add configuration flag to set if RecursionDesired should be set on health checks (https://github.com/coredns/coredns/pull/3679)
+* plugin/forward: Add exponential backoff to healthcheck (https://github.com/coredns/coredns/pull/3643)
+* plugin/forward: Add max_concurrent option (https://github.com/coredns/coredns/pull/3640)
+* plugin/hosts: Modifies NODATA handling (https://github.com/coredns/coredns/pull/3536)
+* plugin/kubernetes: fix metadata (https://github.com/coredns/coredns/pull/3642)
+* plugin/kubernetes: Return all records with matching IP for reverse queries (https://github.com/coredns/coredns/pull/3687)
+* plugin/metrics: Add query type to latency as well (https://github.com/coredns/coredns/pull/3685)
+* plugin/pkg/up: Make default intervals shorter (https://github.com/coredns/coredns/pull/3651)