add example of setting permissions to sample config

Author: jovanlanik

metalog.conf

@@ -4,6 +4,9 @@ maxsize  = 1048576  # size in bytes (1048576 = 1 megabyte)
 maxtime  = 86400    # time in seconds (86400 = 1 day)
 maxfiles = 5        # num files per directory
 
+# Permissions for log directories. 0750 allows group to read logs. 0700 is default.
+#perms    = 0750
+
 # Format of the timestamp: YYYY-MM-DD HH:MM:SS.NNN
 #stamp_fmt = "%F %T.%3N"
 
@@ -57,6 +60,10 @@ Password failures :
     logdir   = "/var/log/pwdfail"
 #    command  = "/usr/local/sbin/mail_pwd_failures.sh"
 
+# If you changed default permissions it may be a good idea to set more
+# restrictive permissions on sensitive logs.
+#    perms    = 0700
+
 Kernel messages :
 
     facility = "kern"