rename variables

defaults/main.yml

 
-user_access_username:
-user_access_ssh_public_key: '{{ hostvars["man"]["user_public_key_path"] }}'
+kypo_user_access_username:
+kypo_user_access_ssh_public_key: '{{ hostvars["man"]["user_public_key_path"] }}'
 

tasks/main.yml

 
 - name: ensure existence of user
   user:
-    name: '{{ user_access_username }}'
+    name: '{{ kypo_user_access_username }}'
 
 - name: ensure existence of SSH directory
   file:
-    path: /home/{{ user_access_username }}/.ssh
+    path: /home/{{ kypo_user_access_username }}/.ssh
     state: directory
-    owner: '{{ user_access_username }}'
-    group: '{{ user_access_username }}'
+    owner: '{{ kypo_user_access_username }}'
+    group: '{{ kypo_user_access_username }}'
     mode: 0700
 
 - name: add public key to authorized keys
   authorized_key:
-    user: '{{ user_access_username }}'
-    key: '{{ lookup("file", user_access_ssh_public_key) }}'
+    user: '{{ kypo_user_access_username }}'
+    key: '{{ lookup("file", kypo_user_access_ssh_public_key) }}'