[Feature] Onboard with 'scan.coverity.com'

[nmanthey]

Is your feature request related to a problem? Please describe. Using continuous code analysis allows to avoid hard to spot issues early. scan.coverity.com/ is free for open source software.

Describe the solution you'd like Add a github action or travisci job running continuous code analysis.

Describe alternatives you've considered Not running code analysis, or running one-line-cr-bot from https://github.com/awslabs/one-line-scan

Additional context Coverity is used on other open source code bases like Linux and Xen. it helped detecting and removing bugs in those projects.

[wipawel]

KTF has been onboarded: https://scan.coverity.com/projects/kerneltestframework-ktf

[wipawel]

An automated scanning for the repo and incoming PRs via Travis CI or GitHub Actions could be added.