The test_luks_mount upstream-system test is failing on bionic

[Łukasz Zemczak]

Currently udisk2 is failing on all arches for bionic in release. Log of the failing test:

======================================================================
ERROR: test_luks_mount (__main__.Luks)
LUKS mount/unmount
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Traceback (most recent call last):
  File "src/tests/integration-test", line 1367, in test_luks_mount
    encrypted = self.setup_crypto_device()
  File "src/tests/integration-test", line 1277, in setup_crypto_device
    'label': GLib.Variant('s', 'treasure')}))
  File "src/tests/integration-test", line 345, in fs_create
    block.call_format_sync(fs_type, options, None)
GLib.GError: udisks-error-quark: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error creating file system: Command-line `mkfs.ext4 -F -L "treasure" "/dev/dm-0"' exited with non-zero exit status 5:
stdout: `Creating filesystem with 60416 1k blocks and 15104 inodes
Filesystem UUID: e570a38c-ddb3-4d50-a572-1ff0a9886932
Superblock backups stored on blocks:
 8193, 24577, 40961, 57345

Allocating group tables: 0/8 done
Writing inode tables: 0/8 done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: 0/8 '
stderr: `mke2fs 1.44.1 (24-Mar-2018)

Warning, had trouble writing out superblocks.
' (0)

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[Łukasz Zemczak (sil2100)]

For now I will be hinting this.

[Sebastien Bacher (seb128)]

The issue isn't there in the current version and serie