ansible 2.6 convention for apt module

tasks/main.yml

@@ -7,7 +7,7 @@
 
 - name: make sure no other display managers are installed
   apt:
-    pkg: "{{ item }}"
+    name: "{{ item }}"
     state: absent
   with_items:
     - slim

tasks/maintenance.yml

@@ -2,8 +2,7 @@
 
 - name: install maintenance mode packages
   apt:
-    pkg: "{{ item }}"
-    state: installed
+    name: "{{ item }}"
   with_items:
     - yad
     - xbindkeys