Clean up residual files about /usr/libexec (#7756)

When reset, need to clean up directory /usr/libexec.

roles/reset/tasks/main.yml

@@ -305,6 +305,7 @@
     - "{{ krew_root_dir | default('/usr/local/krew') }}"
     - /etc/modules-load.d/kube_proxy-ipvs.conf
     - /etc/modules-load.d/kubespray-br_netfilter.conf
+    - /usr/libexec/kubernetes
   ignore_errors: yes
   tags:
     - files