add support to set ssh key type

tasks/users.yml

@@ -1,6 +1,7 @@
 - set_fact:
     defaultuser:
       genssh: false
+      ssh_key_type: ed25519
       group: ~
       groups: []
       home: "{{ ('/var/lib/'+currentuser.key) if (currentuser.value.system|d(True)) else ('/home/'+currentuser.key) }}"
@@ -18,7 +19,7 @@
   user:
     name: "{{ user.name }}"
     generate_ssh_key: "{{ user.genssh }}"
-    ssh_key_type: ed25519
+    ssh_key_type: "{{ user.ssh_key_type }}"
     group: "{{ user.group }}"
     groups: "{{ user.groups }}"
     home: "{{ (user.home) }}"