[BaseRegressionTest] Remove memory address for objects

[jgsogo]

Using the regression feature you need to remove the memory address for objects so the saved callstack files match.

Right now I'm using this workaround, is there any built-in feature?

        // Workaround: remove memory address for objects
        helper.callStack = helper.callStack.stream()
                .map { "$it".replaceAll(/@[a-z0-9]{7,8}/, '') }
                .collect(Collectors.toList())

[stchar]

hi, @jgsogo I don't use "regression" feature, so i'm not sure how to help, however your workaround looks good to me. If you would like to submit a PR I'll be glad to merge it in.