Add test suite for the git vcs provider#58

nover wants to merge 2 commits intomasterskarpdev/dotnet-version-cli:masterfrom

57-find-a-way-to-consistently-test-the-git-vcs-providerskarpdev/dotnet-version-cli:57-find-a-way-to-consistently-test-the-git-vcs-providerCopy head branch name to clipboard