Prepare directory, add Alpine.

molecule/default/prepare.yml

@@ -8,6 +8,10 @@
     - role: robertdebock.bootstrap
 
   tasks:
+    - name: make /etc/default
+      file:
+        path: /etc/default
+        state: directory
     - name: place bogus /etc/default/grub
       copy:
         content: 'GRUB_CMDLINE_LINUX="a=1"'

vars/main.yml

@@ -3,6 +3,8 @@
 _grub_packages:
   default:
     - grub2-efi
+  Alpine:
+    - grub
   Debian:
     - grub2