Support K3s config yaml (#252)

* Support K3s config yaml

Signed-off-by: Derek Nola <derek.nola@suse.com>

roles/prereq/tasks/main.yml

@@ -187,3 +187,17 @@
         dest: "/var/lib/rancher/k3s/server/manifests"
         mode: 0600
       loop: "{{ extra_manifests }}"
+
+- name: Setup optional config file
+  when: config_yaml is defined
+  block:
+    - name: Make config directory
+      ansible.builtin.file:
+        path: "/etc/rancher/k3s"
+        mode: 0755
+        state: directory
+    - name: Copy config values
+      ansible.builtin.copy:
+        content: "{{ config_yaml }}"
+        dest: "/etc/rancher/k3s/config.yaml"
+        mode: 0644