(PIE-1300) Puppet 8 Compatibility

[coreymbe]

Summary

Detailed Description

• PDK Update:

  • metadata.json
  • .devcontainer/devcontainer.json
  • .rubocop.yml
  • .pdkignore
  • Rakefile
  • Gemfile

• Rubocop Changes:

  • lib/puppet/indirector/facts/splunk_hec.rb
  • spec/spec_helper_acceptance_local.rb

• Lint Changes:

  • manifests.init.pp
  • plans/acceptance/pe_server_setup.pp
  • plans/acceptance/provision_machines.pp
  • plans/examples/apply_example.pp
  • plans/examples/result_example.pp

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Maint Changes:

• metadata.json

  • Added Puppet 8 / Updated supported OS list.

• .github/workflows/integration_test.yml

  • Add puppet8-nightly.
  • Removed Honeycomb steps.

• .github/workflows/ci.yml

  • Refactored as it was using deprecated action-litmus_spec repo.

• spec/classes/init_spec.rb

  • Removed MockFunction of pe_event_forwarding::base_path.

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Ruby 3 Changes

• spec/support/unit/reports/splunk_hec_spec_helpers.rb
  • Utilize kwargs for Puppet::Transaction::Event.new.

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Checklist

[X] Acceptance Tests [X] PR title is "(Ticket|Maint) Short Description" [X] Commit title matches PR title