Ensure CI mode in bootstrap script
Ensure CI mode in bootstrap script

Fixes #4803.

mono/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,mono/msbuild,chipitsine/msbuild,chipitsine/msbuild,mono/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,cdmihai/msbuild,cdmihai/msbuild,chipitsine/msbuild,mono/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,rainersigwald/msbuild