refactor(k3s): streamline inventory and primary server IP handling

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

vars/group_vars/proxmox/vms.yml

@@ -78,3 +78,14 @@ vms:
     ciuser: "{{ user }}"
     sshkeys: "{{ pubkey }}"
     disk_size: 64 # in Gb
+  - name: "k3s-loadbalancer"
+    node: "naruto01"
+    vmid: 150
+    cores: 1
+    memory: 2048 # in MiB
+    net:
+      net0: "virtio,bridge=vmbr0,firewall=1"
+    boot_image: "{{ proxmox_cloud_init_images.debian.name }}"
+    ciuser: "{{ user }}"
+    sshkeys: "{{ pubkey }}"
+    disk_size: 32 # in Gb