Workaround Cassandra table setup issue

[yito88]

Description

Cassandra's table setup failed repeatedly even though the waits were inserted.
This workaround tries Cassandra table setup without the schema loader.

Related issues and/or PRs

If this PR addresses or references any issues and/or other PRs, list them here.

Changes made

• Add a function to open a Cassandra session
• Restore the Cassandra table setup function
• Convert the schemata to the Cassandra(Alia) format

Checklist

The following is a best-effort checklist. If any items in this checklist are not applicable to this PR or are dependent on other, unmerged PRs, please still mark the checkboxes after you have read and understood each item.

• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• Tests (unit, integration, etc.) have been added for the changes.
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

Provide any additional information or notes that may be relevant to the reviewers or stakeholders.

[inv-jishnu]

LGTM!
I have tested this in my local environment and everything was working as expected and I didn't face any issues.
Thank you.

[brfrn169]

LGTM! Thank you!

@yito88 BTW, have we identified the root cause of the issue that occurs only when using Schema Loader?

[feeblefakie]

LGTM! Thank you!
Found one typo, so it would be great if you could merge it after it's fixed.

[feeblefakie]

Suggested change

	"Only the current test schemata are covered
	"Only the current test schemas are covered