Fix installation of Chocolatey in test setting
Fix installation of Chocolatey in test setting

On my machine (which has a separate copy of Chocolatey in
a different directory), the Chocolatey installer will insist
on using that copy of Chocolatey, unless I remove an environment
variable beforehand (therefore fooling the installer into thinking
that Chocolatey is not already installed).

wjk/ChocolateyInstaller,wjk/ChocolateyInstaller,wjk/ChocolateyInstaller