Fix dns issues in kargo

Change-Id: I1ceeb7ed8d13db586d78e99d939456889807ab27
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

utils/kargo/kargo_default_common.yaml

@@ -16,3 +16,9 @@ use_hyperkube_cni: true
 etcd_version: "v3.0.1"
 calico_version: "v0.20.0"
 calico_cni_version: "v1.3.1"
+
+# Custom (additional) DNS settings
+searchdomains:
+  - ccp.svc.cluster.local
+nameservers:
+  - 8.8.8.8

utils/kargo/roles/preinstall/tasks/main.yml

@@ -19,20 +19,3 @@
 - name: Update hostname via hostnamectl
   command: hostnamectl set-hostname {{ inventory_hostname }}
   when: updated_etc_hosts.changed
-
-# FIXME(mattymo): Fix in kargo
-- name: Purge resolvconf
-  apt:
-    name: resolvconf
-    force: yes
-    state: absent
-
-- name: Gather info about /etc/resolv.conf
-  stat:
-    path: /etc/resolv.conf
-  register: etcresolvconf
-
-- name: Fix /etc/resolv.conf symlink
-  shell: "cp --remove-destination `realpath /etc/resolv.conf` /etc/resolv.conf"
-  when: etcresolvconf.stat.islnk
-