The CIStatusValidator cannot verify multi-module releases

The CIStatusValidator cannot verify multi-module releases, since the current algorithm for detecting the GitHub endpoint for retrieving the build status [0] relies on the artifact name + version for the reference. This works for regular single-module releases, since the tag corresponds to the artifact name + version. However, in the case of multi-module releases the validator fails. The reliable way of validating releases is by just using the tag name, which in the case of a release available in the pom.

[0] - https://developer.github.com/v3/repos/statuses/#get-the-combined-status-for-a-specific-ref