Michal Rostecki 75336e5a35 integration-test: Fix the kernel version chceck for smoke test
Before this chane, the check was always negative if the minor version
was less then 9. So, for example, the smoke test was skipped for kernel
6.1:

```
skipping as 6.1 does not meet version requirement of 5.9
```

Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
..
tests integration-test: Fix the kernel version chceck for smoke test
main.rs tests: use libtest-mimic and fix CI