Skipped failing test and added race condition check to CI

[samiib]

Skipped the aci_rest_managed importWithIpv6 test from CI to stop random failures in the acceptance test. Issue #1218 is created to fix this single test case.

• The race check should be enabled in CI to detect any future issues.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1217 +/- ## ========================================= Coverage ? 86.94% ========================================= Files ? 43 Lines ? 11258 Branches ? 0 ========================================= Hits ? 9788 Misses ? 1005 Partials ? 465 ```

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[samiib]

Long term fix is ready here #1236. Cancelling this PR.