guestfs: fix custom image bringup failure for Debian 13

When using custom images (like Debian 13 daily builds), the base_image
role would incorrectly attempt to build the image using virt-builder
even though a custom image workflow was configured. This failed because
"debian-13-generic-amd64-daily" is not a valid virt-builder template.

The issue had two root causes:

1. The base-image.yml task would run even when custom images were
   configured, attempting to use virt-builder with an invalid template

2. The custom-image.yml task prepared the custom image but never copied
   it to the base_image_pathname location expected by subsequent tasks

Fix both issues by:
- Adding a condition to skip base-image.yml when using custom images
- Copying the prepared custom image to the base_image_pathname location

This ensures custom images are properly downloaded, prepared with the
kdevops user configuration, and placed in the expected location for
VM provisioning.

Fixes: df31e8f55d7d ("guestfs: fix custom image partition not expanded after disk resize")
Generated-by: Claude AI
Signed-off-by: Luis Chamberlain <[email protected]>

Author: mcgrof

playbooks/roles/base_image/tasks/custom-image.yml

@@ -281,3 +281,14 @@
       - "--no-compression"
       - "{{ custom_image_dir }}"
   changed_when: true
+
+- name: Copy custom image to base image location
+  become: true
+  become_method: ansible.builtin.sudo
+  ansible.builtin.copy:
+    src: "{{ custom_image }}"
+    dest: "{{ base_image_pathname }}"
+    remote_src: true
+    mode: "u=rw,g=r,o=r"
+  when:
+    - custom_image_stat.stat.exists or custom_image_download is changed

playbooks/roles/base_image/tasks/main.yml

@@ -17,3 +17,4 @@
     file: "{{ role_path }}/tasks/base-image.yml"
   when:
     - not result.stat.exists
+    - not guestfs_has_custom_raw_image|bool