images: Rename <layer>-image to <layer>-image-all

These are test images to build all recipes in layer. Renaming them makes
them refect what they are. Moreover we can rename the ptest images to
match OE-Core naming conventions for meta-oe/meta-perl/meta-python

Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit 0cb0180594)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-multimedia/recipes-multimedia/images/multimedia-libcamera-image.bb

@@ -4,7 +4,7 @@
 DESCRIPTION = "libcamera image"
 LICENSE = "MIT"
 
-require  meta-multimedia-image.bb
+require  meta-multimedia-image-all.bb
 
 IMAGE_INSTALL += " \
         kernel-modules \