Fix CoreDNS 1.7.0 and above

Daniel Meyerholt · Daniel Meyerholt · commit d8cc88284b3a · 2021-07-04T15:05:35.000+02:00
Starting from CoreDNS 1.7.0 the upstream option is not valid anymore
and CoreDNS does not start when it is set. It has been effectively a
noop since 1.5.2.

Task: 42765
Story: 2009030
Change-Id: I4e8029a4cd5e89d7173758fa1dc2e718895fdbe7
diff --git a/magnum/drivers/common/templates/kubernetes/fragments/core-dns-service.sh b/magnum/drivers/common/templates/kubernetes/fragments/core-dns-service.sh
@@ -71,7 +71,6 @@ data:
         health
         kubernetes ${DNS_CLUSTER_DOMAIN} ${PORTAL_NETWORK_CIDR} ${PODS_NETWORK_CIDR} {
            pods verified
-           upstream
            fallthrough in-addr.arpa ip6.arpa
         }
         prometheus :9153

Original file line number	Diff line number	Diff line change
`@@ -71,7 +71,6 @@ data:`
`71`	`71`	`health`
`72`	`72`	`kubernetes ${DNS_CLUSTER_DOMAIN} ${PORTAL_NETWORK_CIDR} ${PODS_NETWORK_CIDR} {`
`73`	`73`	`pods verified`
`74`		`- upstream`
`75`	`74`	`fallthrough in-addr.arpa ip6.arpa`
`76`	`75`	`}`
`77`	`76`	`prometheus :9153`