fix: remove trailing slash in CONTROLLER_CACHE_DIRECTORY

Signed-off-by: Mathieu Labourier <[email protected]>

Author: Millefeuille42

drivers/linstorvolumemanager.py

@@ -43,7 +43,7 @@
 
 DRBD_BY_RES_PATH = '/dev/drbd/by-res/'
 
-CONTROLLER_CACHE_DIRECTORY = '/dev/shm/linstor/'
+CONTROLLER_CACHE_DIRECTORY = '/dev/shm/linstor'
 CONTROLLER_CACHE_FILE = 'controller_uri'
 
 PLUGIN = 'linstor-manager'