Remove git-commit-sha from source-url for dotnet, now that we are getting it from Microsoft
Remove git-commit-sha from source-url for dotnet, now that we are getting it from Microsoft

* In dependency builds, skip a file if there is no version in there (to ensure that we don't read ones that are just tracker stories)
[#168706196]

cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci