Fixed issue where ksql log4j templating was failing in case of ccloud

[anuj-apdev]

Fixed issue where ksql log4j templating was failing in case of ccloud…

Description

In case if broker list is missing, template engine fails to find the kafka_broker dict.

Fixes # (issue)

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

By running a non ccloud scenario.

Test Configuration:

Checklist:

• [ ] My code follows the style guidelines of this project
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] Any dependent changes have been merged and published in downstream modules
• [ ] Any variable changes have been validated to be backwards compatible