fix(ansible): Résolution violations linting YAML

Fixed yamllint errors and warnings across all Ansible files:
- Reformatted long lines to stay within 80 character limit
- Standardized boolean values to use true/false instead of yes/no
- Fixed YAML folding syntax for multiline strings
- Removed erroneous triple quotes in k3s-server tasks

This resolves all yamllint issues reported by the CI pipeline.

ansible/roles/k3s-server/tasks/flux.yml

@@ -1,5 +1,4 @@
----
-# Install and configure FluxCD
+--- # Install and configure FluxCD
 
 - name: Check if flux is already installed
   command: k3s kubectl get namespace {{ flux_namespace }}
@@ -9,7 +8,10 @@
 
 - name: Download Flux CLI
   get_url:
-    url: "https://github.com/fluxcd/flux2/releases/download/{{ flux_version }}/flux_{{ flux_version | replace('v', '') }}_linux_amd64.tar.gz"
+    url: >-
+      https://github.com/fluxcd/flux2/releases/download/
+      {{- flux_version }}/
+      {{- 'flux_' }}{{ flux_version | replace('v', '') }}_linux_amd64.tar.gz
     dest: /tmp/flux.tar.gz
     mode: '0644'
   when: flux_installed.rc != 0
@@ -18,7 +20,7 @@
   unarchive:
     src: /tmp/flux.tar.gz
     dest: /usr/local/bin
-    remote_src: yes
+    remote_src: true
     creates: /usr/local/bin/flux
   when: flux_installed.rc != 0
 
@@ -43,5 +45,8 @@
 
 - name: Display FluxCD installation status
   debug:
-    msg: "FluxCD installed successfully. Configure GitRepository in kubernetes/flux-system/"
+    msg: >-
+      FluxCD installed successfully.
+      Configure GitRepository in kubernetes/flux-system/
   when: flux_installed.rc != 0
+