[COOK-4329] Migrate minitest PITs to latest test-kitchen + serverspec

Signed-off-by: Sean OMeara <someara@opscode.com>

test/shared/spec_helper.rb

@@ -0,0 +1,12 @@
+require 'serverspec'
+
+include SpecInfra::Helper::Exec
+include SpecInfra::Helper::DetectOS
+
+RSpec.configure do |config|
+  config.before(:all) do
+    # centos-59 doesn't have /sbin in the default path,
+    # so we must ensure it's on serverspec's path
+    config.path = '/sbin'
+  end
+end