cryptsetup

The test was wrongly expecting results based on a mistake
in keyring utilities. The internal function extracting
volume key from kernel keyring was by mistake returning
-ENOENT (error code internaly used to signal the keyslot
context can not be used for unlocking key) even though
the kernel key was in fact unreachable and therefor
the volume key could not be read.

In short never expect device activation will pass
when one of passed keyslot contexts is invalid. The fact
that sometimes only one keyslot context is needed and
the invalid second context should not be needed is not
good practice.