add session_prefix const to cache ids
add session_prefix const to cache ids

Useful to identify what kind of content is cached by a given key

Signed-off-by: Henrique Vicente de Oliveira Pinto <28de51b74821a029745831cd392f9993a1920244@henvic-mp.local>

henvic/vehikel,henvic/vehikel,henvic/vehikel