Bump kitchen-ec2 to 2.3.4
Bump kitchen-ec2 to 2.3.4

This pull request was triggered automatically via Expeditor when kitchen-ec2 2.3.4 was promoted to Rubygems.

This change falls under the obvious fix policy so no Developer Certificate of Origin (DCO) sign-off is required.

chef/chef-dk,chef/chef-dk,chef/chef-dk