Normalize user-facing defaults

roles/virtualization/tasks/proxmox.yml

@@ -2,7 +2,7 @@
 - name: Deploy VM on Proxmox
   delegate_to: localhost
   vars:
-    virtualization_dns_value: "{{ vm_dns | default('') }}"
+    virtualization_dns_value: "{{ vm_dns }}"
     virtualization_dns_list_raw: >-
       {{
         virtualization_dns_value
@@ -11,7 +11,7 @@
       }}
     virtualization_dns_list: >-
       {{ virtualization_dns_list_raw | map('trim') | reject('equalto', '') | list }}
-    virtualization_search_value: "{{ vm_dns_search | default('') }}"
+    virtualization_search_value: "{{ vm_dns_search }}"
     virtualization_search_list_raw: >-
       {{
         virtualization_search_value
@@ -33,7 +33,7 @@
     cpu: host
     cores: "{{ vm_cpus }}"
     memory: "{{ vm_memory }}"
-    balloon: "{{ vm_ballo | default(omit) }}"
+    balloon: "{{ vm_ballo if vm_ballo | int > 0 else omit }}"
     numa_enabled: true
     hotplug: network,disk
     update: "{{ virtualization_tpm2_enabled | bool }}"
@@ -57,16 +57,16 @@
       }}
     ide:
       ide0: "{{ boot_iso }},media=cdrom"
-      ide1: "{{ rhel_iso + ',media=cdrom' if rhel_iso is defined else omit }}"
+      ide1: "{{ rhel_iso + ',media=cdrom' if rhel_iso | length > 0 else omit }}"
       ide2: "{{ hypervisor_storage }}:cloudinit"
     net:
-      net0: virtio,bridge={{ vm_nif }}{% if vlan_name is defined and vlan_name %},tag={{ vlan_name }}{% endif %}
+      net0: virtio,bridge={{ vm_nif }}{% if vlan_name | length > 0 %},tag={{ vlan_name }}{% endif %}
     ipconfig:
       ipconfig0: >-
         {{
-          'ip=' ~ vm_ip ~ '/' ~ (vm_nms | default(24))
-          ~ (',gw=' ~ vm_gw if vm_gw is defined and vm_gw | length else '')
-          if vm_ip is defined and vm_ip | length
+          'ip=' ~ vm_ip ~ '/' ~ vm_nms
+          ~ (',gw=' ~ vm_gw if vm_gw | length else '')
+          if vm_ip | length
           else 'ip=dhcp'
         }}
     nameservers: "{{ virtualization_dns_list if virtualization_dns_list | length else omit }}"