Added example of v6 agent setting in E2E Vargant tests
Added example of v6 agent setting in E2E Vargant tests

While the code supported v5 and v6 puppet configurations, it previously
didn't have an example of an actual v6 variable. In the process, we
removed out an unnecessary util loading in the env setter script too.

conjur/puppet,conjurinc/puppet,conjurinc/puppet,conjur/puppet