support removing options in resolvconf with tab separator (#9304)

roles/kubernetes/preinstall/tasks/0060-resolvconf.yml

@@ -29,7 +29,7 @@
     backup: "{{ not resolvconf_stat.stat.islnk }}"
   with_nested:
     - "{{ [resolvconffile, base|default(''), head|default('')] | difference(['']) }}"
-    - [ 'search ', 'nameserver ', 'domain ', 'options ' ]
+    - [ 'search\s', 'nameserver\s', 'domain\s', 'options\s' ]
   notify: Preinstall | propagate resolvconf to k8s components
 
 - name: Remove search/domain/nameserver options after block
@@ -40,7 +40,7 @@
     backup: "{{ not resolvconf_stat.stat.islnk }}"
   with_nested:
     - "{{ [resolvconffile, base|default(''), head|default('')] | difference(['']) }}"
-    - [ 'search ', 'nameserver ', 'domain ', 'options ' ]
+    - [ 'search\s', 'nameserver\s', 'domain\s', 'options\s' ]
   notify: Preinstall | propagate resolvconf to k8s components
 
 - name: get temporary resolveconf cloud init file content