➕ Add default values to roles (#509)

* ➕ Add default values to roles

* 🚚 Move to use meta files for roles

* 🛠 Fix descriptions

* ➕ Add meta for server

* 🚧 WIP

* 🌟 Complete

* 🧹 Ran and fix lint errors

* 🔨 Fix required and default conflict

---------

Co-authored-by: Techno Tim <timothystewart6@gmail.com>

roles/k3s_agent/defaults/main.yml

@@ -0,0 +1,4 @@
+---
+extra_agent_args: ""
+group_name_master: master
+systemd_dir: /etc/systemd/system

roles/k3s_agent/meta/main.yml

@@ -0,0 +1,34 @@
+---
+argument_specs:
+  main:
+    short_description: Setup k3s agents
+    options:
+      apiserver_endpoint:
+        description: Virtual ip-address configured on each master
+        required: true
+
+      extra_agent_args:
+        description: Extra arguments for agents nodes
+
+      group_name_master:
+        description: Name of the master group
+        default: master
+
+      k3s_token:
+        description: Token used to communicate between masters
+
+      proxy_env:
+        type: dict
+        description: Internet proxy configurations
+        default: ~
+        options:
+          HTTP_PROXY:
+            required: true
+          HTTPS_PROXY:
+            required: true
+          NO_PROXY:
+            required: true
+
+      systemd_dir:
+        description: Path to systemd services
+        default: /etc/systemd/system

roles/k3s_agent/templates/k3s.service.j2

@@ -12,7 +12,7 @@ ExecStart=/usr/local/bin/k3s agent \
   --server https://{{ apiserver_endpoint | ansible.utils.ipwrap }}:6443 \
   {% if is_pxe_booted | default(false) %}--snapshotter native \
   {% endif %}--token {{ hostvars[groups[group_name_master | default('master')][0]]['token'] | default(k3s_token) }} \
-  {{ extra_agent_args | default("") }}
+  {{ extra_agent_args }}
 KillMode=process
 Delegate=yes
 LimitNOFILE=1048576