Test playbook using molecule (#67)

* Test cluster using molecule

* Fix detection of first control node

* Include --flannel-iface and --node-ip as k3s arguments

* Store logs of k3s-init.service as GitHub job artifacts

molecule/resources/verify/from_outside/tasks/main.yml

@@ -0,0 +1,12 @@
+---
+- name: Verify
+  run_once: true
+  delegate_to: "{{ outside_host }}"
+  block:
+    - ansible.builtin.import_tasks: kubecfg-fetch.yml
+    - name: "TEST CASE: Get nodes"
+      ansible.builtin.include_tasks: test/get-nodes.yml
+    - name: "TEST CASE: Deploy example"
+      ansible.builtin.include_tasks: test/deploy-example.yml
+  always:
+    - ansible.builtin.import_tasks: kubecfg-cleanup.yml