Fix access for db.type

plays/lib/database.yml

@@ -8,26 +8,26 @@
         mount_map:
           mariadb: /var/lib/mysql
 
-    - name: "Create {{ db_type }} database"
+    - name: "Create {{ db.type }} database"
       no_log: true
       shell: "
         dokku
-        {{ db_type }}:create
+        {{ db.type }}:create
         {{ app }}
         --password {{ db_passwd }}
         --root-password {{ root_db_passwd }}
       "
       args:
-        creates: "/var/lib/dokku/services/{{ db_type }}/{{ app }}"
+        creates: "/var/lib/dokku/services/{{ db.type }}/{{ app }}"
 
     - name: Link mariadb database to application
       dokku_service_link:
         app: "{{ app }}"
         name: "{{ app }}"
-        service: "{{ db_type }}"
+        service: "{{ db.type }}"
 
-    - name: "Specify {{ db_type }} volume mounts"
+    - name: "Specify {{ db.type }} volume mounts"
       dokku_storage:
         app: "{{ app }}"
         mounts:
-          - "/var/lib/dokku/services/{{ db_type }}/{{ app }}:{{ mount_map[db_type] }}"
+          - "/var/lib/dokku/services/{{ db.type }}/{{ app }}:{{ mount_map[db.type] }}"