refactor(vars): add system/hypervisor dict inputs

roles/virtualization/defaults/main.yml

@@ -1,12 +1,15 @@
 ---
 virtualization_libvirt_image_dir: >-
-  {{ vm_path if vm_path is defined and vm_path | length > 0 else '/var/lib/libvirt/images' }}
+  {{
+    system_cfg.path
+    if system_cfg is defined and (system_cfg.path | string | length) > 0
+    else '/var/lib/libvirt/images'
+  }}
 virtualization_libvirt_disk_path: >-
   {{ [virtualization_libvirt_image_dir, hostname ~ '.qcow2'] | ansible.builtin.path_join }}
 virtualization_libvirt_cloudinit_path: >-
   {{ [virtualization_libvirt_image_dir, hostname ~ '-cloudinit.iso'] | ansible.builtin.path_join }}
-virtualization_mac_address: >-
-  {{ '52:54:00' | community.general.random_mac(seed=hostname) }}
+virtualization_xen_disk_path: /var/lib/xen/images
 
 virtualization_tpm2_enabled: >-
   {{