[ClientTelemetry] Client telemetry tests are flaky

[neildsh]

ClientTelemetryTestsBase has logic that is timing dependent. This causes the tests to be flaky.
The test also appears to be making real network requests, presumably to a server outside the node that tests run on.
Ideally, the WaitAndAssert method should be rewritten to correct these deficiencies.

To Reproduce
This reproduces in the PR builds.

Expected behavior
Tests should not use calls to Task.Delay or make network requests outside the node that they run on. The outcome of a test should be deterministic.

[kirankumarkolli]

@sourabh1007 can you please take a look?

[Pilchie]

👀

[Pilchie]

If we can't prioritize this and identify a fix within this week, we should disable these tests until we can. It unduly impacts the productivity of the entire team.