tests: regression test LVM listing code
tests: regression test LVM listing code

The revisions listing code mistakes VM name suffix with volume name.

QubesOS/qubes-issues#4680

QubesOS/qubes-core-admin,QubesOS/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,marmarek/qubes-core-admin,marmarek/qubes-core-admin