site: Bootstrap python for any target

Before running the main site playbook or any other tasks, we ensure that
python is installed on any host so we can actually connect with ansible.

site.yaml

@@ -1,4 +1,22 @@
 ---
+# TODO: Add to bootstrapping role / make less dependent on apt-get & debian (python3)
+- name: Bootstrap python everywhere
+  hosts: all
+  gather_facts: False
+  become: true
+  tags:
+    - system
+    - bootstrap
+  tasks:
+    - name: check for python
+      ansible.builtin.raw: python3 --version
+      changed_when: false
+      failed_when: false
+      register: pythoncheck
+    - name: install debian python
+      ansible.builtin.raw: apt-get update && apt-get install python3 -y
+      when: pythoncheck.rc == 127
+
 - name: Prepare incus server host
   hosts: host_system
   tasks:
@@ -31,6 +49,7 @@
         - python3-requests # for docker network
 
 - name: Prepare all docker hosted containers
+  gather_facts: True
   hosts: instance_system
   tags:
     - containers