Fix recover-control-plane undefined 'proxy_disable_env' variable (#7326)

(cherry picked from commit 05adeed1fa)

Conflicts:
	recover-control-plane.yml

recover-control-plane.yml

@@ -18,6 +18,7 @@
 - hosts: "{{ groups['kube-master'] | first }}"
   environment: "{{ proxy_disable_env }}"
   roles:
+    - { role: kubespray-defaults}
     - { role: recover_control_plane/master }
 
 - include: cluster.yml