snapcraft: slighty improve buildfile (see #1188)
snapcraft: slighty improve buildfile (see #1188)

yonjah/rclone,ncw/rclone,ncw/rclone,olihey/rclone,seuffert/rclone,olihey/rclone,yonjah/rclone,ncw/rclone,yonjah/rclone,seuffert/rclone,B4dM4n/rclone,B4dM4n/rclone,B4dM4n/rclone,seuffert/rclone,olihey/rclone,seuffert/rclone,B4dM4n/rclone,ncw/rclone,yonjah/rclone,olihey/rclone