Automate updates to InstaScale test result images

[anishasthana]

#120 introduced the ability to update the CodeFlare being used for a test case. The issue however is that when you update the Default value for the deployment, the test cases are outdated.

8c7803e is an example commit fixing the test failures.

We should determine a fix for this. One of the options is to update https://github.com/project-codeflare/codeflare-operator/blob/main/Makefile#L104 to also edit the test results.

[sutaakar]

Another option is for tests to fetch the proper image directly from https://github.com/project-codeflare/codeflare-operator/blob/main/controllers/defaults.go and replace a placeholder in test resource.

[astefanutti]

Another option is for tests to fetch the proper image directly from https://github.com/project-codeflare/codeflare-operator/blob/main/controllers/defaults.go and replace a placeholder in test resource.

+1. Ideally we should move away from templates, and use strongly typed input test data.

[astefanutti]

This has become obsolete with #279.