[v255] test: fix TEST-84-STORAGETM with nvme-cli < 2.7

[bluca]

The -vv parameter was added in version 2.7, check before using it

Follow-up for ebc0514

(cherry picked from commit 60491ce)
(cherry picked from commit f75ca4648efd92e6a7a5a244a5de09187a30e43c)
(cherry picked from commit 4227d16e5623ed085afe5a4773fa81845ffa0179)

[packit-as-a-service]

We were not able to find or create Copr project packit/systemd-systemd-stable-484 specified in the config with the following error:

Cannot create a new Copr project (owner=packit project=systemd-systemd-stable-484 chroots=[]): chroots: '[]' is not a valid choice for this field..

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Unless the HTTP status code above is >= 500, please check your configuration for:

1. typos in owner and project name (groups need to be prefixed with @)
2. whether the project name doesn't contain not allowed characters (only letters, digits, underscores, dashes and dots must be used)
3. whether the project itself exists (Packit creates projects only in its own namespace)
4. whether Packit is allowed to build in your Copr project
5. whether your Copr project/group is not private