fix(bootstrap): RHEL 9 bootstrap from Arch ISO compatibility

roles/bootstrap/tasks/rhel.yml

@@ -9,12 +9,21 @@
         groupinstall -y core base standard
       register: bootstrap_result
       changed_when: bootstrap_result.rc == 0
+      failed_when:
+        - bootstrap_result.rc != 0
+        - "'grub2-common' not in (bootstrap_result.stderr | default(''))"
 
-    - name: Ensure chroot has resolv.conf
-      ansible.builtin.file:
-        src: /run/NetworkManager/resolv.conf
+    - name: Write resolv.conf into chroot
+      ansible.builtin.copy:
         dest: /mnt/etc/resolv.conf
-        state: link
+        mode: "0644"
+        content: |
+          {% for dns in system_cfg.network.dns.servers %}
+          nameserver {{ dns }}
+          {% endfor %}
+          {% if system_cfg.network.dns.search | default([]) | length > 0 %}
+          search {{ system_cfg.network.dns.search | join(' ') }}
+          {% endif %}
 
     - name: Ensure chroot RHEL DVD directory exists
       ansible.builtin.file: