SCT - siren-tests integration

[mikliapko]

For 1-to-1 restore testing purposes, we need to check how the existing SCT restore tests can be used to validate the scenario:

• where the cluster is created with Scylla Cloud (siren CLI calls);
• start the 1-1 restore with Scylla Manager (SCT).

[mikliapko]

@karol-kokoszka
How important for these tests is to have initial cluster created via siren? Does it matter?

If not, we can considere an option to create initial cluster via SCT that, at first glance, may simplify things significantly.

[karol-kokoszka]

How important for these tests is to have initial cluster created via siren? Does it matter?

@mikliapko Yes, it matters. We must have possibility of doing complete e2e. Starting with Siren.