Add release note

MoteHue · MoteHue · commit 8d72c01ed84c · 2025-09-16T16:22:31.000+01:00
diff --git a/releasenotes/notes/build-images-from-ark-6eb0d5c8779bb970.yaml b/releasenotes/notes/build-images-from-ark-6eb0d5c8779bb970.yaml
@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    Added support for building overcloud host images from Pulp package mirrors.
+    This feature can be toggled with the flag
+    ``stackhpc_build_overcloud_image_from_pulp_package_mirrors``. For the CI
+    Builder environment, this is enabled, so our StackHPC overcloud host images
+    will now be built with packages from Ark.
