proftpd: Fix format of public key files controlled by ansible

The comments used by ansible's blockinfile module break the format
expected by proftpd for public ssh keys, making them unusable.

Replace with a template, we will just have to accept that we need to use
ansible for all changes to these file.

CHANGELOG.md

@@ -53,6 +53,7 @@ The **patch** part changes is incremented if multiple releases happen the same m
 * evolinux-user: Fix sudoers privilege for check php\_fpm80
 * nagios-nrpe: Fix check opendkim for recent change in listening port
 * varnish: fix missing state, that blocked the task
+* proftpd: Fix format of public key files controlled by ansible
 
 ### Removed
 

proftpd/tasks/accounts.yml

@@ -62,13 +62,13 @@
     - proftpd
 
 - name: Allow keys for SFTP account
-  blockinfile:
-    dest: "/etc/proftpd/sftp.authorized_keys/{{ item.name }}"
-    state: present
-    block: "{{ item.sshkeys }}"
-    create: yes
+  template:
+    dest: "/etc/proftpd/sftp.authorized_keys/{{ _proftpd_account.name }}"
+    src: authorized_keys.j2
     mode: 0600
   loop: "{{ proftpd_accounts_final }}"
+  loop_control:
+    loop_var: _proftpd_account
   notify: restart proftpd
   when: 
     - proftpd_sftp_enable | bool

proftpd/templates/authorized_keys.j2

@@ -0,0 +1,3 @@
+{%- for key in _proftpd_account.sshkeys %}
+{{ key }}
+{%- endfor %}