(PE-38685) Beaker 6 upgrade

[tlehman]

What's this PR do?

Upgrades beaker to 6, kicks off a release (3.2 -> 3.3)

Any background context you want to provide?

As part of the beaker 6 upgrade for pe_acceptance_tests, I had to bump the version on beaker-pe. My local testing of pe_acceptance_tests pointed at my local directory for beaker-pe, so I verified this works.

Details of my test:

In pe_acceptance_tests, locally, I pointed beaker-pe at my local directory (mentioned above), then pointed at beaker-puppet 4.0 (to get the beaker 6 transitive deps worked out).

Then I visited this CI run and yoinked a set of commands to run locally:

1. beaker-hostgenerator
2. beaker init
3. pe_ver and pe_dir for the hosts.cfg

The bundle exec beaker exec command completed with a return value of 0, all tests passing.

[donoghuc]

Test failures are unrealted (pulling agents from wrong location). Going to merge and release to unblock beaker 6 upgrade in integration test.