test(scale-up): test write and rebuild perf

[soyacz]

We want to test write and rebuild operations time for different sizes of the same instance type.

Testing

• [x] - https://jenkins.scylladb.com/view/staging/job/scylla-staging/job/lukasz/job/c3-scale-up-test/ (modify config files param to select proper instance type test)

PR pre-checks (self review)

• [ ] I added the relevant backport labels
• [ ] I didn't leave commented-out/debugging code

Reminders

• Add New configuration option and document them (in sdcm/sct_config.py)
• Add unit tests to cover my changes (under unit-test/ folder)
• Update the Readme/doc folder relevent to this change (if needed)

[soyacz]

@fruch @roydahan this test I think is ready to merge, we can later add other instance types when needed.

[fruch]

@soyacz

Move the offending yaml to the configuration folder, and we can merge this

[soyacz]

@soyacz

Move the offending yaml to the configuration folder, and we can merge this

done