ci: Add llvm-cov parameter for sonar

[BAStos525]

Context

Possible fix for llvm-cov (instead of grcov) coverage report compatibility within the Sonarqube analysis.

Solution

Based on https://community.sonarsource.com/t/cant-get-llvm-cov-reports-to-show-up-in-sonarqube-project/20833/4 topic. We might revert back to lcov.info coverage format instead of coverage.txt. The last one is a kinda of tested and recommended.

Checklist

• [ ] I've read CONTRIBUTING.md.
• [ ] (optional) I've written unit tests for the code changes.
• [ ] All review comments have been resolved.
• [ ] All CI checks pass.

[alexstroke1]

it didn't work

[alexstroke1]

Created a new issue on devops team https://soramitsu.atlassian.net/browse/DOPS-3453