Updated version in Global.proj to 4.0
Updated version in Global.proj to 4.0

We're not releasing 4.0 yet, but this will fix the upstream packages in the AzureDevOps feed
Effectively a cherry-pick of commit 1336c9423b1978eac49fca7b809e38e05a22b9ff from May 3rd, 2018
fluentmigrator/fluentmigrator,fluentmigrator/fluentmigrator,stsrki/fluentmigrator,stsrki/fluentmigrator