Set dns server to mirantis internal

Related-Prod: PRODX-2063
Change-Id: I5d8636df671160a0c0b08875f81e2a3ce81479cb
diff --git a/de/heat-templates/scripts/instance_boot.sh b/de/heat-templates/scripts/instance_boot.sh
index 1226ede..ab76dd0 100644
--- a/de/heat-templates/scripts/instance_boot.sh
+++ b/de/heat-templates/scripts/instance_boot.sh
@@ -101,9 +101,12 @@
 }
 
 function create_ucp_config {
-    echo "[scheduling_configuration]
+    echo "
+[scheduling_configuration]
     enable_admin_ucp_scheduling = true
-    default_node_orchestrator = \"kubernetes\"" | docker config create com.docker.ucp.config -
+    default_node_orchestrator = \"kubernetes\"
+[cluster_config table]
+    dns = 172.18.208.44" | docker config create com.docker.ucp.config -
 }
 
 function swarm_init {
@@ -120,9 +123,14 @@
     mv kubectl /usr/local/bin/
 }
 
+function prepare_network {
+    systemctl restart systemd-resolved
+}
+
 
 case "$NODE_TYPE" in
     ucp)
+        prepare_network
         update_docker_network
         install_docker_ce
         swarm_init
@@ -133,6 +141,7 @@
         install_kubectl
         ;;
     master)
+        prepare_network
         update_docker_network
         install_docker_ce
         download_bundles
@@ -140,6 +149,7 @@
         install_kubectl
         ;;
     worker)
+        prepare_network
         update_docker_network
         install_docker_ce
         download_bundles