[validate-container-engine] check if kubelet is present was not working (#8679)

Signed-off-by: Cyril Corbon <corboncyril@gmail.com>

roles/container-engine/validate-container-engine/tasks/main.yml

@@ -80,14 +80,12 @@
         apply:
           tags:
             - pre-remove
-      when:
-        - kubelet_systemd_unit_exists
+      when: kubelet_systemd_unit_exists.stat.exists
     - name: Stop kubelet
       service:
         name: kubelet
         state: stopped
-      when:
-        - kubelet_systemd_unit_exists
+      when: kubelet_systemd_unit_exists.stat.exists
     - name: Remove Containerd
       import_role:
         name: container-engine/containerd
@@ -109,14 +107,12 @@
         apply:
           tags:
             - pre-remove
-      when:
-        - kubelet_systemd_unit_exists
+      when: kubelet_systemd_unit_exists.stat.exists
     - name: Stop kubelet
       service:
         name: kubelet
         state: stopped
-      when:
-        - kubelet_systemd_unit_exists
+      when: kubelet_systemd_unit_exists.stat.exists
     - name: Remove Docker
       import_role:
         name: container-engine/docker
@@ -137,14 +133,12 @@
         apply:
           tags:
             - pre-remove
-      when:
-        - kubelet_systemd_unit_exists
+      when: kubelet_systemd_unit_exists.stat.exists
     - name: Stop kubelet
       service:
         name: kubelet
         state: stopped
-      when:
-        - kubelet_systemd_unit_exists
+      when: kubelet_systemd_unit_exists.stat.exists
     - name: Remove CRI-O
       import_role:
         name: container-engine/cri-o