chore: fix ssh keys write

tasks/main.yml

@@ -5,11 +5,10 @@
     attr: '-i'
 
 - name: Write ssh keys
-  copy:
-    content: "item"
+  template:
+    src: "authorized_keys.j2"
     dest: "/root/.ssh/authorized_keys"
     mode: 0600
-  with_items: "{{ ssh_protect_root_public_keys }}"
 
 - name: Setup i attr in authorized_keys file
   file:

templates/authorized_keys.j2

@@ -0,0 +1,3 @@
+{% for key in ssh_protect_root_public_keys %}
+{{key}}
+{% endfor %}