What would you like to be added:

Add the hook point support for current conformance test suite.

For example, like AfterTestFail hook point, developers can attach various commands to this hook point, and programs that attach to this hook point wil only be executed if one conformance test is failed.

Why this is needed:

This will be super helpful for developers to debug the failed conformance test.

Sometimes the error trace reported by conformance test is not very useful. For example, we'd like to see the status/logs of specific resources (by attaching kubectl cmd to the hook which I described above could ease the pain), even some other configs that can be retrieved by other commands.