fix: use var .native.set_hostname

Signed-off-by: William Wang <williamw0825@gmail.com>

builtin/core/roles/native/init/tasks/main.yaml

@@ -3,7 +3,7 @@
     hostnamectl set-hostname {{ .inventory_hostname }} \
       && sed -i '/^127.0.1.1/s/.*/127.0.1.1 {{ .inventory_hostname }}/g' {{ .item }}
   when: 
-    - .set_hostname
+    - .native.set_hostname
     - .inventory_hostname | ne "localhost"
   loop: "{{ .native.localDNS | toJson }}"
 - name: OS | Synchronize initialization script to remote node

builtin/core/roles/precheck/os/tasks/main.yaml

@@ -2,13 +2,13 @@
 - name: OS | Assert valid system hostname format
   block:
     - name: OS | Validate inventory hostname is RFC-compliant
-      when: .set_hostname
+      when: .native.set_hostname
       assert:
         that: .inventory_hostname | regexMatch "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         fail_msg: >-
           The hostname "{{ .inventory_hostname }}" is invalid. Hostnames must use only lowercase alphanumeric characters, '.', or '-', and must start and end with an alphanumeric character.
     - name: OS | Validate current host system hostname is RFC-compliant
-      when: .set_hostname | not
+      when: .native.set_hostname | not
       assert:
         that: .hostname | regexMatch "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
         fail_msg: >-