add restic_prune-params

docs/30_Configuration/50_File_transfer.job.md

@@ -163,6 +163,8 @@ restic_keep-weekly = 12
 restic_keep-monthly = 12
 restic_keep-yearly = 10
 
+restic_prune-params = --max-unused unlimited --max-repack-size 1G --cleanup-cache
+
 # ----------------------------------------------------------------------
 ```
 
@@ -279,6 +281,8 @@ restic_keep-within = 6m
 # restic_keep-weekly = 12
 # restic_keep-monthly = 12
 # restic_keep-yearly = 10
+
+restic_prune-params = --max-unused unlimited --max-repack-size 1G --cleanup-cache
 ```
 
 For pruning with restic forget the following values can be used. 
@@ -292,6 +296,9 @@ See the docs for more details to the keep values of the forget command <https://
 * restic_keep-within-(hourly|daily|weekly|monthly|yearly) [duration] - keep snapshots of given period that are newer than duration (eg. 1y5m7d2h) relative to the latest snapshot
 * restic_keep-tag [taglist] - keep snapshots with this taglist (can be specified only one in imlbackup) (default [])
 
+* restic_prune-params [options] - additional prune options. see `restic prune help`
+
+
 ## restore-path
 
 Default path where to put restored file when running *restore.sh*.