Install dependency for test-kitchen

Author: albertvaka

.circleci/config.yml

@@ -236,6 +236,7 @@ jobs:
             choco install msys2 --params "/NoUpdate" --allow-downgrade -y --version 20180531.0.0
             refreshenv
             ridk.cmd exec pacman -U msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz
+            ridk.cmd exec pacman -S mingw-w64-x86_64-ruby-xmlrpc
             ridk.cmd install 2 3
             ridk.cmd exec pacman -S --noconfirm --needed base-devel mingw-w64-x86_64-toolchain
             powershell kill -n gpg-agent # Started by msys, if we don't kill it the job stays running forever (found by running 'ps -W' before and after the last two commands)