SMB3: Honor 'handletimeout' flag for multiuser mounts

commit 6b356f6cf941d5054d7fab072cae4a5f8658e3db upstream.

Fixes: ca567eb2 ("SMB3: Allow persistent handle timeout to be configurable on mount")
Signed-off-by: Paul Aurich <paul@darkrain42.org>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>