test(geodistributed): multidc with 5 regions

[aleksbykov]

New jobs and config yamls to test run with 5 regions distributed cluster

Testing

• Longevity

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 relevant to this change (if needed)