Fix registry dependency for container jobs (#1152)

diff --git a/zuul.d/container-images/libvirtd.yaml b/zuul.d/container-images/libvirtd.yaml
index dc2d6d2..0c34b3e 100644
--- a/zuul.d/container-images/libvirtd.yaml
+++ b/zuul.d/container-images/libvirtd.yaml
@@ -27,6 +27,8 @@
     name: atmosphere-build-container-image-libvirtd
     parent: atmosphere-build-container-image
     dependencies:
+      - name: atmosphere-buildset-registry
+        soft: false
       - name: atmosphere-build-container-image-ubuntu
         soft: true
       - name: atmosphere-build-container-image-ubuntu-cloud-archive
@@ -55,6 +57,8 @@
     name: atmosphere-upload-container-image-libvirtd
     parent: atmosphere-upload-container-image
     dependencies:
+      - name: atmosphere-buildset-registry
+        soft: false
       - name: atmosphere-upload-container-image-ubuntu
         soft: true
       - name: atmosphere-upload-container-image-ubuntu-cloud-archive