Replace swap vars with single kubelet_fail_swap_on (#10036)

roles/kubernetes/preinstall/tasks/0010-swapoff.yml

@@ -4,7 +4,7 @@
     name: "{{ item }}"
     fstype: swap
     state: absent
-  with_items:
+  loop:
     - swap
     - none
 
@@ -18,7 +18,6 @@
   command: /sbin/swapoff -a
   when:
     - swapon.stdout
-    - kubelet_fail_swap_on | default(True)
   ignore_errors: "{{ ansible_check_mode }}"  # noqa ignore-errors
 
 - name: Disable swapOnZram for Fedora
@@ -26,4 +25,3 @@
   when:
     - swapon.stdout
     - ansible_distribution in ['Fedora']
-    - kubelet_fail_swap_on | default(True)

roles/kubernetes/preinstall/tasks/main.yml

@@ -3,7 +3,7 @@
 - import_tasks: 0010-swapoff.yml
   when:
     - not dns_late
-    - disable_swap
+    - kubelet_fail_swap_on
 
 - import_tasks: 0020-set_facts.yml
   tags: