generation: Add raw kernel revision in shadir metadata.

generation/40upload-image.sh

@@ -18,12 +18,14 @@ version_to_list () {
 	# remove everything after "+" and "-", and separate numbers according to "."
 	python3 -c "import sys; print(list(map(int, sys.argv[1].split(\"+\")[0].split(\"-\")[0].split(\".\"))))" "$1"
 }
+kernel_revision_arch=$(uname -r)
 
 # the keys "file" and "urlmd5" are sometimes mandatory in shadir metadata
 # and are defined here only for the sake of shadir compliance
 json_metadata="{ \
 	\"server-group\": \"$SERVER_GROUP\", \
 	\"kernel-version\": \"$(version_to_list $(uname -v | cut -d' ' -f4))\", \
+	\"kernel-revision\": \"${kernel_revision_arch%-*}\", \
 	\"mca-version\": \"$(version_to_list $MCA_VERSION)\", \
 	\"flb-version\": \"$(version_to_list $FLB_VERSION)\", \
 	\"plg-version\": \"$(version_to_list $PLG_VERSION)\", \