Fix linting errors; Extend firstboot logic

ansible/roles/firstboot/files/ansible_payload/roles/metacluster/tasks/main.yml

@@ -6,3 +6,14 @@
     INSTALL_K3S_SKIP_DOWNLOAD: 'true'
     INSTALL_K3S_EXEC: 'server --cluster-init'
 
+- name: Ensure API availability
+  ansible.utils.cli_parse:
+    command: curl -k https://{{ vapp['guestinfo.ipaddress'] }}:6443/livez?verbose
+    parser:
+      name: ansible.utils.json
+    set_fact: api_readycheck
+  ignore_errors: yes
+  until: api_readycheck.apiVersion is defined
+  retries: 3
+  delay: 30
+