Include referenced images from referenced kubernetes content.

Signed-off-by: Oleksandr Andriienko <oandriie@redhat.com>

build/scripts/list_referenced_images.sh

@@ -14,3 +14,7 @@ set -e
 
 readarray -d '' devfiles < <(find "$1" -name 'devfile.yaml' -print0)
 yq -r '..|.image?' "${devfiles[@]}" | grep -v "null" | sort | uniq
+# include images from referenced kubernetes content.
+for devfile in "${devfiles[@]}"; do
+    yq -r '.components[] | .referenceContent?' "${devfile}" | yq -r '.items?|..|.image?' | grep -v "null" | sort | uniq
+done