* Test commit - adding iml file to gitignore

* - Updating versions of lettuce and cp-images in docker
- Renaming IT as ITTest so the tests actually run
- Adding Test Cases for Configuration Setting Propagation for Redis Connector (one is disabled for now)

* Changing parent pom version to accommodate connect utils updation, elaborated package-info.java to include missing fields causing failure of all DocumentationTests, and added plugin with *preview* supportSummary. To be added introduction and documentationWarning fields in package-info.java and BaseDocumentationClass warnings.

* Renaming RedisSinkTaskITTest back to RedisSinkTaskIT

* Removing DocumentationWarning