feat(install): etcd deployment now optional

!35

tasks/k3s/install.yaml

@@ -343,7 +343,7 @@
     cmd: |
       INSTALL_K3S_SKIP_DOWNLOAD=true \
       INSTALL_K3S_VERSION="v{{ KubernetesVersion }}{{ KubernetesVersion_k3s_prefix }}" \
-      /tmp/install.sh --cluster-init
+      /tmp/install.sh {% if nfc_role_kubernetes_etcd_enabled %}--cluster-init{% endif %}
   changed_when: false
   when: >
     kubernetes_config.cluster.prime.name | default(inventory_hostname) == inventory_hostname

templates/k3s-config.yaml.j2

@@ -29,13 +29,20 @@
           "traefik"
         ],
         "disable-network-policy": true,
-        "etcd-snapshot-retention": kubernetes_etcd_snapshot_retention | int,
-        "etcd-snapshot-schedule-cron":  kubernetes_etcd_snapshot_cron_schedule | string,
         "flannel-backend": "none",
         "service-cidr": nfc_role_kubernetes_service_subnet
       }
     -%}
 
+    {%- if nfc_role_kubernetes_etcd_enabled -%}
+
+        {%- set servers_config = servers_config | combine({
+          "etcd-snapshot-retention": kubernetes_etcd_snapshot_retention | int,
+          "etcd-snapshot-schedule-cron":  kubernetes_etcd_snapshot_cron_schedule | string,
+        }) -%}
+
+    {%- endif -%}
+
     {%- if 
           kubernetes_config.cluster.domain_name | default(nfc_role_kubernetes_cluster_domain) is defined
             and