Make integration test more robust regarding global config version

[simu]

Context

The integration test checks that the catalog commit message contains the correct Git commit hash for the global configuration repo.

This check is not robust against changes in the global config repo (the integration test uses https://github.com/projectsyn/getting-started-commodore-defaults) which don't result in a catalog change.

That revision check needs to be made smarter to cope with such changes.

Alternatives

#346 fixes the globalGitRepoRevision to a specific commit sha. This should avoid the issue in the short term, but is not a very satisfying solution.