Change to FQCN with ansible-lint fixer

Since ansible-base 2.10 (later ansible-core), FQCN is the new way to go.

Updated .ansible-lint with a production profile and removed fqcn in skip_list.
Updated .yamllint with rules needed.

Ran ansible-lint --fix=all, then manually applied some minor changes.

roles/k3s_agent/tasks/http_proxy.yml

@@ -1,18 +1,18 @@
 ---
 - name: Create k3s-node.service.d directory
-  file:
-    path: '{{ systemd_dir }}/k3s-node.service.d'
+  ansible.builtin.file:
+    path: "{{ systemd_dir }}/k3s-node.service.d"
     state: directory
     owner: root
     group: root
-    mode: '0755'
+    mode: "0755"
   when: proxy_env is defined
 
 - name: Copy K3s http_proxy conf file
-  template:
-    src: "http_proxy.conf.j2"
+  ansible.builtin.template:
+    src: http_proxy.conf.j2
     dest: "{{ systemd_dir }}/k3s-node.service.d/http_proxy.conf"
     owner: root
     group: root
-    mode: '0755'
+    mode: "0755"
   when: proxy_env is defined