Change i3 vars to defaults, to override in work.yml

work.yml

@@ -3,16 +3,18 @@
   hosts: localhost
   connection: local
   roles:
-    - base
-    - bash
-    - sudoers
-    - git-summary
-    - etckeeper
-    - pass
-    - ssh-agent
-    - i3
-    - neovim
-    - profanity
-    - neomutt
-    - terminator
-    - tmux
+    - role: base
+    - role: bash
+    - role: sudoers
+    - role: git-summary
+    - role: etckeeper
+    - role: pass
+    - role: ssh-agent
+    - role: i3
+      vars:
+        wallpaper_type: xkcd
+    - role: neovim
+    - role: profanity
+    - role: neomutt
+    - role: terminator
+    - role: tmux