install python3 only when ansible_system == Linux (#110)

* assume windows when ansible_connection is winrm

Signed-off-by: Thomas Sjögren <konstruktoid@users.noreply.github.com>

* replace raw: with package:

Signed-off-by: Thomas Sjögren <konstruktoid@users.noreply.github.com>

* revert back to raw

Signed-off-by: Thomas Sjögren <konstruktoid@users.noreply.github.com>

* use uname to check if it's a Linux system

Signed-off-by: Thomas Sjögren <konstruktoid@users.noreply.github.com>

---------

Signed-off-by: Thomas Sjögren <konstruktoid@users.noreply.github.com>

src/molecule_plugins/vagrant/playbooks/prepare.yml

@@ -3,6 +3,12 @@
   hosts: all
   gather_facts: false
   tasks:
+    - name: Gather system info
+      ansible.builtin.raw: uname
+      register: raw_uname
+      changed_when: false
+      failed_when: false
+
     - name: Bootstrap python for Ansible
       ansible.builtin.raw: |
         command -v python3 python || (
@@ -16,3 +22,4 @@
         )
       become: true
       changed_when: false
+      when: raw_uname.rc == 0 and raw_uname.stdout | trim == "Linux"