What does this PR do?

• Bumps the minimum agent version required for Instrumentation CRD to 7.82.x.
• Adds node agent version check for instrumentation CRD feature enablement.

Motivation

A breaking change has been made to the instrumentation CRD controller starting in 7.82.x, which means this unreleased feature now requires 7.82.x to properly function. The operator should disable the feature if the deployed agent & cluster agent are below 7.82

Additional Notes

Anything else we should know when reviewing?

Minimum Agent Versions

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

• Agent: v7.82.x
• Cluster Agent: v7.82.x

Describe your test plan

• Added unit tests ✅

Manual QA.

1. Deploy agent with version >= 7.82.0

apiVersion: datadoghq.com/v2alpha1
kind: DatadogAgent
metadata:
  name: datadog
  annotations:
    agent.datadoghq.com/instrumentation-crd-enabled: "true" # annotation enabling the feature
spec:
  global:
    logLevel: "info"
    clusterName: mathewe-inst-controller
    credentials:
      apiSecret:
        secretName: datadog-secret
        keyName: api-key
      appSecret:
        secretName: datadog-secret
        keyName: app-key
    kubelet:
      tlsVerify: false

2. Confirm both cluster and core agent have DD_INSTRUMENTATION_CRD_CONTROLLER_ENABLED: "true" env var set.
3. Drop agent image below 7.82
4. Confirm both cluster and core agent do not have DD_INSTRUMENTATION_CRD_CONTROLLER_ENABLED set to true.

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
• All commits are signed (see: signing commits)