actualized for kubespray version 2.28.0

kubespray/project/roles/kubernetes/preinstall/tasks/0063-networkmanager-dns.yml

@@ -4,11 +4,12 @@
     path: /etc/NetworkManager/conf.d/dns.conf
     section: global-dns-domain-*
     option: servers
-    value: "{{ nameserverentries }}"
+    value: "{{ nameserverentries | join(',') }}"
     mode: '0600'
-    backup: true
+    backup: "{{ leave_etc_backup_files }}"
   when:
-    - nameserverentries != "127.0.0.53" or systemd_resolved_enabled.rc != 0
+    - ('127.0.0.53' not in nameserverentries
+       or systemd_resolved_enabled.rc != 0)
   notify: Preinstall | update resolvconf for networkmanager
 
 - name: Set default dns if remove_default_searchdomains is false
@@ -21,9 +22,9 @@
     path: /etc/NetworkManager/conf.d/dns.conf
     section: global-dns
     option: searches
-    value: "{{ (default_searchdomains | default([]) + searchdomains | default([])) | join(',') }}"
+    value: "{{ (default_searchdomains | default([]) + searchdomains) | join(',') }}"
     mode: '0600'
-    backup: true
+    backup: "{{ leave_etc_backup_files }}"
   notify: Preinstall | update resolvconf for networkmanager
 
 - name: NetworkManager | Add DNS options to NM configuration
@@ -33,5 +34,5 @@
     option: options
     value: "ndots:{{ ndots }},timeout:{{ dns_timeout | default('2') }},attempts:{{ dns_attempts | default('2') }}"
     mode: '0600'
-    backup: true
+    backup: "{{ leave_etc_backup_files }}"
   notify: Preinstall | update resolvconf for networkmanager