[CECO-1153] APM e2e test

[tbavelier]

What does this PR do?

Introduces an APM e2e test in two parts:

• Ensuring traces are received locally (at the Agent level) for all 3 services, using all 3 methods (TCP on hostPort, Agent service and UDP using socket)
• Ensuring traces are sent to the API

Motivation

What inspired you to submit this pull request?

Additional Notes

Some additional nits:

• WithDevMode should be removed in main branch, it should only be used for dev
• Some deployments used by tests should be cleaned up after said test
• Timeout for some tests could probably be reduced

Minimum Agent Versions

Are there minimum versions of the Datadog Agent and/or Cluster Agent required?

• Agent: vX.Y.Z
• Cluster Agent: vX.Y.Z

Describe your test plan

Write there any instructions and details you may have to test your PR.

Checklist

• PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• PR has a milestone or the qa/skip-qa label

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.66%. Comparing base (993280d) to head (a64b417).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1549   +/-   ##
=======================================
  Coverage   48.66%   48.66%           
=======================================
  Files         226      226           
  Lines       20363    20363           
=======================================
  Hits         9909     9909           
  Misses       9937     9937           
  Partials      517      517           

Flag	Coverage Δ
unittests	48.66% <ø> (ø)

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