feat: replace ansible templating with makejinja (#1156)

bootstrap/templates/ansible/inventory/group_vars/worker/main.yaml.j2

@@ -0,0 +1,18 @@
+{% if bootstrap_distribution == 'k3s' %}
+---
+# https://rancher.com/docs/k3s/latest/en/installation/install-options/agent-config/
+# https://github.com/PyratLabs/ansible-role-k3s
+
+k3s_control_node: false
+k3s_agent:
+  {% if bootstrap_ipv6_enabled | default(false) %}
+  node-ip: "{% raw %}{{ ansible_host }},{{ ansible_default_ipv6.address }}{% endraw %}"
+  {% else %}
+  node-ip: "{% raw %}{{ ansible_host }}{% endraw %}"
+  {% endif %}
+  pause-image: registry.k8s.io/pause:3.9
+  # TODO: Move these options to a kubelet config file
+  kubelet-arg:
+    - "image-gc-high-threshold=55"
+    - "image-gc-low-threshold=50"
+{% endif %}