fix: prevent cyclic traversals in esc13 post processing

[urangel]

Description

Describe your changes in detail

This is an update to the traversal logic in ESC13 post processing for the func groupIsContainedOrTrusted.

Motivation and Context

Why is this change required? What problem does it solve?

ESC13 post processing logic involved checking whether a group is contained or trusted based on the domain being processed. Domain trusts, which are often "bidirectional", were being traversed but there was no check in the traversal for whether a cycle was encountered. Encountering a cycle was drastically increasing analysis times as the reverse walk for the pathVisitor would go back and forth between the trusting domains.

The ExpansionFilter property of a TraversalPlan was exported so that it could be used outside of the package similarly to the already defined acyclic traversal functions.

This PR addresses: BED-4378

How Has This Been Tested?

Please describe in detail how you tested your changes.
Include details of your testing environment, and the tests you ran to
see how your change affects other areas of the code, etc.

Existing ESC13 integration tests continue to pass. A collection which prompted the issue was ingested via file upload before making changes to verify the long running analysis (hours). After the changes were made, the same collection was uploaded and the analysis time reduced to a couple of seconds.

Screenshots (optional):

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have met the contributing prerequisites
  • Assigned myself to this PR
  • Added the appropriate labels
  • Associated an issue: Issues and Pull Requests README #672
  • Read the Contributing guide: https://github.com/SpecterOps/BloodHound/wiki/Contributing
• I have ensured that related documentation is up-to-date
  • Open API docs
  • Code comments (GoDocs / JSDocs)
• I have followed proper test practices
  • Added/updated tests to cover my changes
  • All new and existing tests passed