Fix CI tests (DataDog#642)

Author: mx-psi

.circleci/config.yml

@@ -229,12 +229,12 @@ jobs:
       - run:
           name: Run tests
           command: |
+            set -e
             choco install ruby --allow-downgrade -y --version 2.5.3.101 # Keep version in sync with next command!
             export PATH=/c/tools/ruby25/bin:$PATH # Make Ruby 2.5 take precedence over the pre-installed 2.6
             ruby --version
-            choco install msys2 --allow-downgrade -y --version 20180531.0.0
+            choco install msys2 --allow-downgrade -y --version 20200903.0.0
             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)
             gem install bundler -v 1.17.3
             rm Gemfile.lock && bundle install --path .bundle
             bundle exec rake test

Gemfile

@@ -20,12 +20,12 @@ group :development do
   gem "rb-readline", '= 0.5.5',                                    require: false, platforms: [:mswin, :mingw, :x64_mingw]
   gem "librarian-puppet"
   gem "kitchen-puppet"
-  gem "kitchen-vagrant"
   gem "kitchen-docker"
   gem "kitchen-verifier-serverspec"
+  gem "mixlib-shellout", "~> 2.2.7",                               platforms: [:ruby]
 
   if RUBY_VERSION >= '2.3'
-    gem "test-kitchen"
+    gem "test-kitchen", '~> 2.5.4'
     gem "puppet-module-posix-default-r#{minor_version}", '~> 0.3', require: false, platforms: [:ruby]
     gem "puppet-module-posix-dev-r#{minor_version}", '~> 0.3',     require: false, platforms: [:ruby]
     gem "puppet-module-win-default-r#{minor_version}", '~> 0.3',   require: false, platforms: [:mswin, :mingw, :x64_mingw]
@@ -40,5 +40,6 @@ group :development do
     gem "rubocop", "~> 0.49.1"
     gem "rubocop-i18n", "~> 1.2.0"
     gem "rubocop-rspec", "~> 1.16.0"
+    gem "artifactory", "~> 2.8.2"
   end
 end