Fix include-test config to include non-std test

[tyrone-wu]

Motivation:
The original issue is sorta described here: #351 (comment).
But tl;dr version is when include-tests is set, #[tokio::test] is not covered in the coverage report.

Changes in this PR:
Added an additional condition to visit_fn to check whether the PathSegments ends in test, such as #[tokio::test] or #[some_fancy_crate::test].

I tested this tarpaulin version against the issue that I was originally encountering, and it seems to fix it.
Before where #[tokio::test] was ignored: https://app.codecov.io/gh/kube-rs/kube/blob/cov-tweak/kube-runtime%2Fsrc%2Fcontroller%2Ffuture_hash_map.rs#L85
After where it's now included: https://app.codecov.io/gh/tyrone-wu/kube/blob/main/kube-runtime%2Fsrc%2Fcontroller%2Ffuture_hash_map.rs#L85

[xd009642]

Cool thanks for this, don't worry about the beta and nightly failures, it's something I'm currently (slowly) working on 😓