add role to install longhorn via helm

linux/k3s/lognhorn/tasks/main.yml

@@ -0,0 +1,11 @@
+- name: Add longhorn chart repo
+  kubernetes.core.helm_repository:
+    name: longhorn
+    repo_url: "https://charts.longhorn.io"
+
+- name: Deploy latest version of longhorn chart inside longhorn-system namespace with values
+  kubernetes.core.helm:
+    name: longhorn
+    chart_ref: longhorn/longhorn
+    release_namespace: longhorn-system
+    create_namespace: yes