We never updated the VerifyNETStandard target in our pkg package
when we started automatically consuming the NETStandard.Library package
so this change fixes it to use the same package as we are consuming
elsewhere in corefx.
Also adds System.ServiceModel.Web shim to the set of shims we support
Also disable apicompat checks for uap* when in BuildAllConfigurations
mode because it doesn't have a RuntimePath correctly setup for those
configurations.