Crypto partitions missing from /dev/disk/by-label/

```sh
$ lsblk /dev/sda2
/dev/sda2: UUID="xxxx" LABEL="CRYPTROOT" TYPE="crypto_LUKS" PARTUUID="xxxx"
$ ls /dev/disk/by-label/
ROOT  BOOT
```

Is `rules/60-persistent-storage.rules` missing `crypto` on `ENV{ID_FS_USAGE}`?:
```udev
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"
```
