add compatibility endpoint for exporting multiple images

with the recent inclusion of dealing with multiple images in a tar archive, we can now add a compatibility endpoint that was missing images/get?names=one,two.

Fixes: #7950

Signed-off-by: baude <bbaude@redhat.com>

test/apiv2/10-images.at

@@ -68,4 +68,7 @@ for i in $iid ${iid:0:12} $PODMAN_TEST_IMAGE_NAME; do
   t GET "libpod/images/$i/get?compress=false" 200 '[POSIX tar archive]'
 done
 
+# Export more than one image
+t GET images/get?names=alpine,busybox 200 '[POSIX tar archive]'
+
 # vim: filetype=sh