Fix build RestorePackages.
Fix build RestorePackages.

Ensure the optimized list of projects references all packages in use.

abkmr/WebApi,chimpinano/WebApi,lewischeng-ms/WebApi,yonglehou/WebApi,lungisam/WebApi,congysu/WebApi,lewischeng-ms/WebApi,yonglehou/WebApi,abkmr/WebApi,lungisam/WebApi,scz2011/WebApi,congysu/WebApi,chimpinano/WebApi,LianwMS/WebApi,scz2011/WebApi,LianwMS/WebApi