Add getClusterParameter tests

[PatersonProjects]

This PR adds the tests for the getClusterParameter administration command.

Ref: Issue #42, #422

[documentdb-triage-tool]

🤖 Auto-triaged by documentdb-triage-tool.

Applied: compatibility test, enhancement
Project fields suggested: Component test-coverage · Priority P2 · Effort L · Status Needs Review
Confidence: 0.30 (deterministic)

Reasoning

component from path globs (test-coverage, test-framework); effort from diff stats (362+0 LOC, 8 files); LLM failed: Invalid response body while trying to fetch https://api.anthropic.com/v1/messages: Premature close

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[manojnks]

https://www.mongodb.com/docs/manual/core/sharded-cluster-config-servers/#std-label-sharding-config-server
should add test cases for all the parameters?

[PatersonProjects]

https://www.mongodb.com/docs/manual/core/sharded-cluster-config-servers/#std-label-sharding-config-server should add test cases for all the parameters?

Looking through that doc page I can't see any additional parameters, but I've added tests for all the ones here that were missing: https://www.mongodb.com/docs/manual/reference/cluster-parameters/

Beyond that list I hesitate to check for direct parameters unless they are directly referenced as included, let me know if I've missed any.

[PatersonProjects]

https://www.mongodb.com/docs/manual/core/sharded-cluster-config-servers/#std-label-sharding-config-server should add test cases for all the parameters?

Looking through that doc page I can't see any additional parameters, but I've added tests for all the ones here that were missing: https://www.mongodb.com/docs/manual/reference/cluster-parameters/

Beyond that list I hesitate to check for direct parameters unless they are directly referenced as included, let me know if I've missed any.

Well, it looks like even the documented parameters are not always included, auditConfig is seemingly not present on local and CI runs. I've kept the other new test but I'm not sure if it should be kept either or if it is a risk of a flaky case, let me know if you would like to me to remove it as well.