Merge remote-tracking branch 'upstream/stable/zed' into zed-upstream-sync

Author: markgoddard

etc/kayobe/overcloud-dib.yml

@@ -10,7 +10,7 @@
 # is true.
 #overcloud_dib_build_host_images:
 
-# List of additional host packages to install.
+# List of additional build host packages to install. Default is an empty list.
 overcloud_dib_host_packages_extra:
   - "{% if 'ubuntu-minimal' in overcloud_dib_host_images | map(attribute='elements') | flatten | list %}debootstrap{% endif %}"