added prepare playbook

molecule/default/prepare.yml

----
-
-- name: Prepare
-  hosts: all
-  gather_facts: False
-  tasks:
-    - name: prepare alpine
-      raw: apk add python3
-      when: inventory_hostname == "alpine"
-
-    - name: prepare debian
-      block:
-        - name: update apt
-          raw: apt update 
-
-        - name: install python
-          raw: apt install --yes python3
-      when: inventory_hostname == "debian"