Always copy cert generation scripts to first etcd (#11612)

If we don't, existing installation would not pick up fix to that script,
such as dc33a1971d.

roles/etcd/tasks/gen_certs_script.yml

@@ -35,7 +35,6 @@
     mode: "0700"
   run_once: true
   when:
-    - gen_certs | default(false)
     - inventory_hostname == groups['etcd'][0]
 
 - name: Gen_certs | run cert generation script for etcd and kube control plane nodes