Filesystem: try umount first during stop-action, and avoid potential "Argument list too long" for force_unmount=safe#1977

oalbrigt merged 2 commits intoClusterLabs:mainClusterLabs/resource-agents:mainfrom

lge:Filesystem-fix-stop-try-umount-firstlge/resource-agents:Filesystem-fix-stop-try-umount-firstCopy head branch name to clipboard