Add support for cassandra tls

[rxg8255]

Provide a description of what has been changed

Checklist

• When introducing a new scaler, I agree with the scaling governance policy
• I have verified that my change is according to the deprecations & breaking changes policy
• Tests have been added
• Changelog has been updated and is aligned with our changelog requirements
• A PR is opened to update our Helm chart (repo) (if applicable, ie. when deployment manifests are modified)
• A PR is opened to update the documentation on (repo) (if applicable)
• Commits are signed with Developer Certificate of Origin (DCO - learn more)

Fixes #5802

Docs: kedacore/keda-docs#1390

[JorTurFer]

Looking good! We have to remove the credentials during the scaler Close() to remove not used credentials. Kafka scaler is already doing it and you can use it as example: https://github.com/kedacore/keda/blob/main/pkg/scalers/kafka_scaler_test.go

We should try to unify the code to access files if it's possible

[rxg8255]

Looking good! We have to remove the credentials during the scaler Close() to remove not used credentials. Kafka scaler is already doing it and you can use it as example: https://github.com/kedacore/keda/blob/main/pkg/scalers/kafka_scaler_test.go

We should try to unify the code to access files if it's possible

[rxg8255]

@JorTurFer
I have corrected the test cases, which is where I was stuck. Today I took some time and spent more to fix the test cases as well. Could you please review my changes.

[zroubalik]

/run-e2e cassandra
Update: You can check the progress here