rust_test_suite does not pull in common code in common module

In attempting to get a simple `rust_test_suite` target running, I think I am seeing that it does not support the design pattern for including common functionality as detailed here in the Rust Book [submodules-in-integration-tests](https://doc.rust-lang.org/book/ch11-03-test-organization.html#submodules-in-integration-tests).

Specifically, when placing common code into `common/mod.rs` and referencing the common functionality in the root level integration tests, I am getting the following error message:

```
error[E0583]: file not found for module `common`
|
3 | mod common;
| ^^^^^^^^^^^
|
```
I am now attempting to see if the `kwargs` parameter for `rust_test_suite` can help here and will report back. I will also do a sanity check on multiple `rust_test` setups to accomplish same.

Does anyone have any additional insights to this issue?