Fix unit test on Dev10. Unlike Dev11/Dev12, when the package restore package is loaded on build, the OnBuildBegin event handler will not be called. So on dev10, we need to call build-solution twice to make sure that package restore happens.
Fix unit test on Dev10. Unlike Dev11/Dev12, when the package restore package is loaded on build, the OnBuildBegin event handler will not be called. So on dev10, we need to call build-solution twice to make sure that package restore happens.

mrward/nuget,jmezach/NuGet2,mrward/NuGet.V2,rikoe/nuget,jmezach/NuGet2,chocolatey/nuget-chocolatey,indsoft/NuGet2,oliver-feng/nuget,chocolatey/nuget-chocolatey,mrward/NuGet.V2,dolkensp/node.net,oliver-feng/nuget,pratikkagda/nuget,ctaggart/nuget,GearedToWar/NuGet2,jholovacs/NuGet,zskullz/nuget,mono/nuget,GearedToWar/NuGet2,mono/nuget,OneGet/nuget,alluran/node.net,chocolatey/nuget-chocolatey,chocolatey/nuget-chocolatey,GearedToWar/NuGet2,rikoe/nuget,pratikkagda/nuget,zskullz/nuget,ctaggart/nuget,antiufo/NuGet2,mrward/NuGet.V2,jholovacs/NuGet,mono/nuget,dolkensp/node.net,mrward/nuget,pratikkagda/nuget,RichiCoder1/nuget-chocolatey,chocolatey/nuget-chocolatey,indsoft/NuGet2,mrward/nuget,zskullz/nuget,xoofx/NuGet,RichiCoder1/nuget-chocolatey,ctaggart/nuget,mrward/nuget,pratikkagda/nuget,pratikkagda/nuget,jholovacs/NuGet,oliver-feng/nuget,jmezach/NuGet2,ctaggart/nuget,jholovacs/NuGet,mrward/NuGet.V2,zskullz/nuget,indsoft/NuGet2,jmezach/NuGet2,xoofx/NuGet,oliver-feng/nuget,rikoe/nuget,indsoft/NuGet2,antiufo/NuGet2,RichiCoder1/nuget-chocolatey,chocolatey/nuget-chocolatey,antiufo/NuGet2,dolkensp/node.net,jmezach/NuGet2,mono/nuget,indsoft/NuGet2,alluran/node.net,OneGet/nuget,mrward/NuGet.V2,jmezach/NuGet2,alluran/node.net,alluran/node.net,antiufo/NuGet2,oliver-feng/nuget,xoofx/NuGet,RichiCoder1/nuget-chocolatey,jholovacs/NuGet,mrward/nuget,antiufo/NuGet2,pratikkagda/nuget,GearedToWar/NuGet2,rikoe/nuget,akrisiun/NuGet,xoofx/NuGet,RichiCoder1/nuget-chocolatey,indsoft/NuGet2,dolkensp/node.net,GearedToWar/NuGet2,xoofx/NuGet,mrward/nuget,akrisiun/NuGet,OneGet/nuget,RichiCoder1/nuget-chocolatey,antiufo/NuGet2,mrward/NuGet.V2,xoofx/NuGet,oliver-feng/nuget,OneGet/nuget,GearedToWar/NuGet2,jholovacs/NuGet