Remove hard-coded externaldns image versions

Related story: https://mirantis.jira.com/browse/PROD-22456

Change-Id: I7a0eb61cfc85ac71adc287bb9ee33e8c47cf9e97
diff --git a/classes/cluster_deprecated/virtual-mcp11-k8s-calico-minimal/kubernetes/init.yml b/classes/cluster_deprecated/virtual-mcp11-k8s-calico-minimal/kubernetes/init.yml
index 77dfb96..5a4e717 100644
--- a/classes/cluster_deprecated/virtual-mcp11-k8s-calico-minimal/kubernetes/init.yml
+++ b/classes/cluster_deprecated/virtual-mcp11-k8s-calico-minimal/kubernetes/init.yml
@@ -28,7 +28,7 @@
     kubernetes_netchecker_server_image: mirantis/k8s-netchecker-server:v1.1.2
     kubernetes_netchecker_agent_probeurls: "http://ipinfo.io"
     kubernetes_calico_policy_image: calico/kube-policy-controller:v0.5.4
-    kubernetes_externaldns_image: mirantis/external-dns:latest
+
     kubernetes_externaldns_provider: coredns
 
     # addresses and hostnames